nr |
titel |
auteur |
tijdschrift |
jaar |
jaarg. |
afl. |
pagina('s) |
type |
1 |
Abdominal Computed Tomography in Teratoma of the Testis: Its Accuracy in Stage I Disease and an Assessment of the Distribution of Retroperitoneal Lymph-Node Metastases in Other Stages of the Disease
|
Bradley, N. |
|
1988 |
139 |
2 |
p. 445- 1 p. |
artikel |
2 |
Abdominoscrotal Hydrocele: A Cause of Abdominal Mass in Children: A Case Report and Review of the Literature
|
Khan, A.H. |
|
1988 |
139 |
2 |
p. 443- 1 p. |
artikel |
3 |
Acetylcysteine for Urinary Tract Mucolysis
|
Benderev, Theodore V. |
|
1988 |
139 |
2 |
p. 353-354 2 p. |
artikel |
4 |
Alkali Action on the Urinary Crystallization of Calcium Salts: Contrasting Responses to Sodium Citrate and Potassium Citrate
|
Preminger, Glenn M. |
|
1988 |
139 |
2 |
p. 240-242 3 p. |
artikel |
5 |
An Evaluation of the Immunochemical Measurement of Prostatic Acid Phosphatase and Prostatic Specific Antigen in Carcinoma of the Prostate
|
Siddall, J.K. |
|
1988 |
139 |
2 |
p. 438- 1 p. |
artikel |
6 |
Antitumor Effects of Human Lymphoblastoid Interferon on Advanced Renal Cell Carcinoma
|
Fujita, Tamio |
|
1988 |
139 |
2 |
p. 256-258 3 p. |
artikel |
7 |
A Serious Complication of Vesical Ether Instillation: Ether Cystitis
|
Gattegno, B. |
|
1988 |
139 |
2 |
p. 357-358 2 p. |
artikel |
8 |
A Simplified Method for Freezing and Storage of Human Semen
|
Kremer, J. |
|
1988 |
139 |
2 |
p. 442- 1 p. |
artikel |
9 |
Association of Supernumerary Nipples With Renal Anomalies
|
Maggyessy, V. |
|
1988 |
139 |
2 |
p. 443- 1 p. |
artikel |
10 |
Author Index to Commentary and Abstracts
|
|
|
1988 |
139 |
2 |
p. 434- 1 p. |
artikel |
11 |
Can a Cytological Grading System be Predictive of Gleason’s Scores in Aspiration Biopsy Cytology Specimens of Prostate Carcinoma?
|
Maksem, J.A. |
|
1988 |
139 |
2 |
p. 438- 1 p. |
artikel |
12 |
Cancer Detection by Quantitative Fluorescence Image Analysis
|
Parry, William L. |
|
1988 |
139 |
2 |
p. 270-274 5 p. |
artikel |
13 |
Case Report: Biliary Obstruction Complicating Extracorporeal Shock Wave Lithotripsy
|
Krongrad, Arnon |
|
1988 |
139 |
2 |
p. 344-345 2 p. |
artikel |
14 |
Circumcision Decision: Prominence of Social Concerns
|
Brown, M.S. |
|
1988 |
139 |
2 |
p. 443-444 2 p. |
artikel |
15 |
Collateral Urethral Duplication in the Frontal Plane: A Spectrum of Cases
|
Kennedy, Hugh A. |
|
1988 |
139 |
2 |
p. 332-334 3 p. |
artikel |
16 |
Complicated Implantations of Inflatable Penile Prostheses
|
Fishman, I.J. |
|
1988 |
139 |
2 |
p. 440-441 2 p. |
artikel |
17 |
Congenital Iliac Arteriovenous Malformation: A Cause of Massive Hematuria and Ureteral Obstruction
|
Sharma, S.K. |
|
1988 |
139 |
2 |
p. 355-356 2 p. |
artikel |
18 |
Contraction of Urinary Bladder by Central Norepinephrine Originating in the Locus Coeruleus
|
Yoshimura, Naoki |
|
1988 |
139 |
2 |
p. 423-427 5 p. |
artikel |
19 |
Current Literature
|
|
|
1988 |
139 |
2 |
p. 447-451 5 p. |
artikel |
20 |
Cytokeratin Pattern in Normal and Pathological Bladder Urothelium: Immunohistochemical Investigation Using Monoclonal Antibodies
|
Cintorino, Marcella |
|
1988 |
139 |
2 |
p. 428-432 5 p. |
artikel |
21 |
Dehydration, Antidiuretic Hormone and the Intravenous Urogram
|
Trewhella, M. |
|
1988 |
139 |
2 |
p. 444- 1 p. |
artikel |
22 |
Detection of Carcinoma in the Post-Cystectomy Urethral Remnant by Flow Cytometric Analysis
|
Hermansen, Dane K. |
|
1988 |
139 |
2 |
p. 304-307 4 p. |
artikel |
23 |
Editorial board
|
|
|
1988 |
139 |
2 |
p. 389- 1 p. |
artikel |
24 |
Editorial Board
|
|
|
1988 |
139 |
2 |
p. 433- 1 p. |
artikel |
25 |
Editorial Comment
|
Herr, Harry W. |
|
1988 |
139 |
2 |
p. 293- 1 p. |
artikel |
26 |
Editorial Comment
|
deKernion, Jean B. |
|
1988 |
139 |
2 |
p. 249-250 2 p. |
artikel |
27 |
Editorial Comment
|
Mostofi, F.K. |
|
1988 |
139 |
2 |
p. 379- 1 p. |
artikel |
28 |
Editorial Comment
|
Gillenwater, Jay Y. |
|
1988 |
139 |
2 |
p. 345- 1 p. |
artikel |
29 |
Editorial Comment
|
Skinner, Donald G. |
|
1988 |
139 |
2 |
p. 327- 1 p. |
artikel |
30 |
Effect of Chronic Nitrofurantoin on the Rabbit Urinary Bladder
|
Levin, Robert M. |
|
1988 |
139 |
2 |
p. 400-404 5 p. |
artikel |
31 |
Ejaculatory Failure and Urinary Dysfunction Secondary to Labetalol
|
O’Meara, John |
|
1988 |
139 |
2 |
p. 371-372 2 p. |
artikel |
32 |
Erosion of an Inflatable Penile Prosthesis Reservoir into the Bladder, Presenting as Bladder Calculi
|
Dupont, Mary C. |
|
1988 |
139 |
2 |
p. 367-368 2 p. |
artikel |
33 |
Extracorporeal Shock-Wave Lithotripsy
|
Newman, D.M. |
|
1988 |
139 |
2 |
p. 438-439 2 p. |
artikel |
34 |
Extracorporeal Shock Wave Lithotripsy for the Treatment of Bulbous Urethral Stones
|
Kramolowsky, Eugene V. |
|
1988 |
139 |
2 |
p. 362-363 2 p. |
artikel |
35 |
Fever, Bacteremia, and Death as Complications of Bacteriuria in Women With Long-Term Urethral Catheters
|
Warren, J.W. |
|
1988 |
139 |
2 |
p. 436- 1 p. |
artikel |
36 |
Flow Cytometric Evaluation of Urological Malignancy
|
Brendler, Charles B. |
|
1988 |
139 |
2 |
p. 342-343 2 p. |
artikel |
37 |
Flow Cytometry Deoxyribonucleic Acid Determinations and Cytology of Bladder Washings: Practical Experience
|
Klein, Frederick A. |
|
1988 |
139 |
2 |
p. 275-278 4 p. |
artikel |
38 |
Giant Posterior Urethral Diverticulum after Radical Retropubic Prostatectomy
|
Laudone, Vincent P. |
|
1988 |
139 |
2 |
p. 364-366 3 p. |
artikel |
39 |
Hereditary Xanthinuria in 2 Pakistani Sisters: Asymptomatic in One with β-Thalassemia but Causing Xanthine Stone, Obstructive Uropathy and Hypertension in the Other
|
Maynard, John |
|
1988 |
139 |
2 |
p. 338-339 2 p. |
artikel |
40 |
Heterogeneous Subpopulations of Human Prostatic Adenocarcinoma Cells: Potential Usefulness of P21 Protein as a Predictor for Bone Metastasis
|
Fan, Kang |
|
1988 |
139 |
2 |
p. 318-322 5 p. |
artikel |
41 |
Intratumor Injection as a More Effective Means of Porphyrin Administration for Photodynamic Therapy
|
Amano, Toshiyasu |
|
1988 |
139 |
2 |
p. 392-395 4 p. |
artikel |
42 |
In Vitro Precipitation of Calcium Oxalate in the Presence of Whole Matrix or Lipid Components of the Urinary Stones
|
Khan, Saeed R. |
|
1988 |
139 |
2 |
p. 418-422 5 p. |
artikel |
43 |
Isolated Renal Artery Dissection Secondary to Medial Degeneration
|
Goldfarb, Richard |
|
1988 |
139 |
2 |
p. 346-347 2 p. |
artikel |
44 |
Laser Treatment of Bladder Carcinoma and Genital Condylomata
|
Malloy, T.R. |
|
1988 |
139 |
2 |
p. 438- 1 p. |
artikel |
45 |
Laser Welding in Urethral Surgery: Improved Results with a Protein Solder
|
Poppas, Dix P. |
|
1988 |
139 |
2 |
p. 415-417 3 p. |
artikel |
46 |
Loss of Alleles of Loci on the Short Arm of Chromosome 3 in Renal Cell Carcinoma
|
Zbar, B. |
|
1988 |
139 |
2 |
p. 438- 1 p. |
artikel |
47 |
Malacoplakia: A Case Involving Epididymis and a Case Involving a Bladder Complicated by Calculi
|
Dubey, N.K. |
|
1988 |
139 |
2 |
p. 359-361 3 p. |
artikel |
48 |
Medical Education: A Continuum in Disarray
|
Griffen Jr., W.O. |
|
1988 |
139 |
2 |
p. 445-446 2 p. |
artikel |
49 |
Metabolism and Nutrition in the Perioperative Period
|
Hensle, Terry W. |
|
1988 |
139 |
2 |
p. 229-239 11 p. |
artikel |
50 |
Metachromasia in the Human Prostate: A Histochemical Difference Between Benign Prostatic Hyperplasia and Prostatic Carcinoma
|
Arcadi, John A. |
|
1988 |
139 |
2 |
p. 315-317 3 p. |
artikel |
51 |
Microexplosion Cystolithotripsy in 105 Cases
|
Uchida, Mutsumi |
|
1988 |
139 |
2 |
p. 263-265 3 p. |
artikel |
52 |
Microwave Surgical Treatment of the Prostate: Clinical Application of Microwave Surgery as a Tool for Improved Prostatic Electroresection
|
Harada, T. |
|
1988 |
139 |
2 |
p. 441- 1 p. |
artikel |
53 |
Natural History and Treatment of Low and High Risk Superficial Bladder Tumors
|
Rübben, Herbert |
|
1988 |
139 |
2 |
p. 283-285 3 p. |
artikel |
54 |
Nerve-Sparing Retroperitoneal Lymphadenectomy for Nonseminomatous Testicular Cancer
|
Javadpour, Nasser |
|
1988 |
139 |
2 |
p. 435- 1 p. |
artikel |
55 |
Note by Editor
|
|
|
1988 |
139 |
2 |
p. 386- 1 p. |
artikel |
56 |
Omphalocele, Cryptorchidism, and Brain Malformations
|
Hadziselimovic, F. |
|
1988 |
139 |
2 |
p. 443- 1 p. |
artikel |
57 |
Oncocytoma and Metastatic Potential: Myth or Reality?
|
Kirschenbaum, A. |
|
1988 |
139 |
2 |
p. 437- 1 p. |
artikel |
58 |
Outpatient Endourologic Procedures
|
Kahn, R.I. |
|
1988 |
139 |
2 |
p. 441-442 2 p. |
artikel |
59 |
Outpatient Implantation of Penile Prostheses Under Local Anesthesia
|
Scott, F.B. |
|
1988 |
139 |
2 |
p. 440- 1 p. |
artikel |
60 |
Percutaneous Lithotripsy in Morbid Obesity
|
Carson III, Culley C. |
|
1988 |
139 |
2 |
p. 243-245 3 p. |
artikel |
61 |
Persistent Müllerian Duct Syndrome in a Man with Transverse Testicular Ectopia
|
Mouli, Konda |
|
1988 |
139 |
2 |
p. 373-375 3 p. |
artikel |
62 |
Phase I/II Study of Recombinant Interferon Gamma in Advanced Renal Cell Carcinoma
|
Garnick, Marc B. |
|
1988 |
139 |
2 |
p. 251-255 5 p. |
artikel |
63 |
Priapism Associated with Trazodone Therapy
|
Carson III, Culley C. |
|
1988 |
139 |
2 |
p. 369-370 2 p. |
artikel |
64 |
Primary Squamous Cell Carcinoma of the Male Urethra: Nuclear Deoxyribonucleic Acid Ploidy Studied by Flow Cytometry
|
Winkler, Harry Z. |
|
1988 |
139 |
2 |
p. 298-303 6 p. |
artikel |
65 |
Progressive Metastatic Renal Cell Carcinoma Controlled by Continuous 5-Fluoro-2-Deoxyuridine Infusion
|
von Roemeling, Reinhard |
|
1988 |
139 |
2 |
p. 259-262 4 p. |
artikel |
66 |
Prospective Randomized Comparison of Therapy and No Therapy for Asymptomatic Bacteriuria in Institutionalized Elderly Women
|
Nicolle, L.E. |
|
1988 |
139 |
2 |
p. 436-437 2 p. |
artikel |
67 |
Radionuclide Assessment of Bladder Outlet Obstruction: A Noninvasive (1-Step) Method for Measurement of Voiding Time, Urinary Flow Rates and Residual Urine
|
Groshar, David |
|
1988 |
139 |
2 |
p. 266-269 4 p. |
artikel |
68 |
Re: Association Between Abdominal Wall Defects and Cryptorchidism, by L. M. Kaplan, M. A. Koyle, G. W. Kaplan, J. H. Farr er and J. Rajfer, J. Urol., 136: 645–647, 1986
|
Beasley, Spencer W. |
|
1988 |
139 |
2 |
p. 388- 1 p. |
artikel |
69 |
Re: Clinical Versus Urodynamic Diagnosis in an Incontinent Geriatric Female Population, by J. Ouslander, D. Staskin, S. Raz, H.-L. Su and K. Hepps, J. Urol., 137: 68–71, 1987
|
Frankel, Gerald |
|
1988 |
139 |
2 |
p. 387- 1 p. |
artikel |
70 |
Reconstructive Surgery After Perforating Trauma of the Lower Urinary Tract
|
Marberger, M. |
|
1988 |
139 |
2 |
p. 439- 1 p. |
artikel |
71 |
Re: Effect of Furosemide on Dialysis Requirement Following Cadaveric Kidney Transplantation, by S. L. LaChance and J. M. Barry, J. Urol., 133: 950–951, 1985
|
Squifflet, Jean-Paul |
|
1988 |
139 |
2 |
p. 386- 1 p. |
artikel |
72 |
Re: Endourological Reconstruction of Posterior Urethral Disruption, by I. J. Fishman, I. H. Hirsch and B. D. Toombs, J. Urol., 137: 283–286, 1987
|
Hefty, Thomas R. |
|
1988 |
139 |
2 |
p. 386-387 2 p. |
artikel |
73 |
Reflex Contractions of the Ischiocavernosus Muscles Following Electrical and Pressure Stimulations
|
Lavoisier, Pierre |
|
1988 |
139 |
2 |
p. 396-399 4 p. |
artikel |
74 |
Regional Anesthesia for Urologic Procedures
|
Cassady Jr., J.F. |
|
1988 |
139 |
2 |
p. 441- 1 p. |
artikel |
75 |
Renal Adenoma
|
Bennington, J.L. |
|
1988 |
139 |
2 |
p. 437- 1 p. |
artikel |
76 |
Renal Cell Carcinoma
|
Linehan, W. Marston |
|
1988 |
139 |
2 |
p. 340-341 2 p. |
artikel |
77 |
Renal Cell Carcinoma in a Solitary Kidney: Late Nephrectomy after 35 Years and Analysis of Tumor Deoxyribonucleic Acid Content
|
Ljungberg, Börje |
|
1988 |
139 |
2 |
p. 350-352 3 p. |
artikel |
78 |
Re: Physiology of Erection and Pharmacological Management of Impotence, by T. F. Lue and E. A. Tanagho, J. Urol., 137: 829–836, 1987
|
Zorgniotti, A.W. |
|
1988 |
139 |
2 |
p. 387- 1 p. |
artikel |
79 |
Reply by Authors
|
|
|
1988 |
139 |
2 |
p. 387- 1 p. |
artikel |
80 |
Reply by Authors
|
|
|
1988 |
139 |
2 |
p. 386- 1 p. |
artikel |
81 |
Reply by Authors
|
|
|
1988 |
139 |
2 |
p. 387- 1 p. |
artikel |
82 |
Reply by Authors
|
|
|
1988 |
139 |
2 |
p. 250- 1 p. |
artikel |
83 |
Reply by Authors
|
|
|
1988 |
139 |
2 |
p. 388- 1 p. |
artikel |
84 |
Retroperitoneal Seminoma with Simultaneous Occurrence in the Prostate
|
Arai, Yutaka |
|
1988 |
139 |
2 |
p. 382-383 2 p. |
artikel |
85 |
Re: Urological Manifestations of Isolated Iliac Artery Aneurysms, by R. Marino, U. M. Mooppan, T. A. Zein, L. Flores and H. Kim, J. Urol., 137: 232–234, 1987
|
Haddad, Farid Sami |
|
1988 |
139 |
2 |
p. 387- 1 p. |
artikel |
86 |
Right Varicocelectomy in Selected Infertile Patients Who Have Failed to Improve After Previous Left Varicocelectomy
|
Amelar, R.D. |
|
1988 |
139 |
2 |
p. 442- 1 p. |
artikel |
87 |
Risk Factors and Outcome of Hospital-Acquired Acute Renal Failure. A Clinical Epidemiologic Study
|
Shusterman, N. |
|
1988 |
139 |
2 |
p. 439- 1 p. |
artikel |
88 |
Role of Fibronectin in Intravesical BCG Therapy for Superficial Bladder Cancer
|
Ratliff, Timothy L. |
|
1988 |
139 |
2 |
p. 410-414 5 p. |
artikel |
89 |
Rudimentary Testes Syndrome Revisited
|
Acquafredda, A. |
|
1988 |
139 |
2 |
p. 444- 1 p. |
artikel |
90 |
Seminal Vesicle Abscess: The Use of Computerized Coaxial Tomography for Diagnosis and Therapy
|
Fox Jr., Charles W. |
|
1988 |
139 |
2 |
p. 384-385 2 p. |
artikel |
91 |
Seminal Vesicle-Secreted Proteins and Their Reactions During Gelation and Liquefaction of Human Semen
|
Lilja, H. |
|
1988 |
139 |
2 |
p. 442- 1 p. |
artikel |
92 |
Septic Shock in the Rat: Activation of Plasma Proteolytic Systems and Effects of a Kallikrein Inhibitor/Bradykin Antagonist (S-2441)
|
Högström, H. |
|
1988 |
139 |
2 |
p. 445- 1 p. |
artikel |
93 |
Simple Cyst of the Rete Testis
|
Tejada, Eduardo |
|
1988 |
139 |
2 |
p. 376-377 2 p. |
artikel |
94 |
Sonourethrography in the Evaluation of Urethral Strictures: A Preliminary Report
|
McAninch, Jack W. |
|
1988 |
139 |
2 |
p. 294-297 4 p. |
artikel |
95 |
Specific Gravity Test Strips Used in Monitoring Urine Concentrations of Urolithiasis Patients
|
Cadoff, Robert E. |
|
1988 |
139 |
2 |
p. 323-325 3 p. |
artikel |
96 |
Spectrum of Gas Within the Kidney. Emphysematous Pyelonephritis and Emphysematous Pyelitis
|
Evanoff, G.V. |
|
1988 |
139 |
2 |
p. 436- 1 p. |
artikel |
97 |
S Phase Fraction of Human Bladder Tumor Measured in Situ with Bromodeoxyuridine Labeling
|
Nemoto, Ryosuke |
|
1988 |
139 |
2 |
p. 286-289 4 p. |
artikel |
98 |
Spontaneous Subcapsular Renal Hematoma: Diagnosis and Management
|
Kendall, A. Richard |
|
1988 |
139 |
2 |
p. 246-249 4 p. |
artikel |
99 |
Stirrups to Minimize Complications of Prolonged Dorsal Lithotomy Positioning
|
Reddy, Pratap K. |
|
1988 |
139 |
2 |
p. 326-327 2 p. |
artikel |
100 |
Superficial Transitional Cell Carcinoma of the Bladder Associated with Mucosal Involvement of the Prostatic Urethra: Results of Treatment with Intravesical Bacillus Calmette-Guerin
|
Hillyard Jr., Raymond W. |
|
1988 |
139 |
2 |
p. 290-293 4 p. |
artikel |
101 |
Supernumerary Nipples and Renal Anomalies in Neonates
|
Kenney, R.D. |
|
1988 |
139 |
2 |
p. 443- 1 p. |
artikel |
102 |
Suppression of Plasma Renin Activity by Cyclosporine
|
Bantle, J.P. |
|
1988 |
139 |
2 |
p. 440- 1 p. |
artikel |
103 |
Suprarenal Occurrence of an Adenomatoid Tumor
|
Evans, Christopher P. |
|
1988 |
139 |
2 |
p. 348-349 2 p. |
artikel |
104 |
Testicular Histology in Fetuses with the Prune Belly Syndrome and Posterior Urethral Valves
|
Orvis, Bradley R. |
|
1988 |
139 |
2 |
p. 335-337 3 p. |
artikel |
105 |
Testicular Papillary Cystadenomatous Tumor of Low Malignant Potential: A Case Report and Discussion of the Literature
|
Brito, C. Gilberto |
|
1988 |
139 |
2 |
p. 378-379 2 p. |
artikel |
106 |
Testicular Seminoma: The M. D. Anderson Experience. An Analysis of Pathological and Patient Characteristics, and Treatment Recommendations
|
Babaian, R. Joseph |
|
1988 |
139 |
2 |
p. 311-314 4 p. |
artikel |
107 |
The Predictive Value of Flow Cytometric Information in the Clinical Management of Stage O (Ta) Bladder Cancer
|
deVere White, Ralph W. |
|
1988 |
139 |
2 |
p. 279-282 4 p. |
artikel |
108 |
The Short-Term Effect of Radical Hysterectomy on Urethral and Bladder Function
|
Farquharson, D.I.M. |
|
1988 |
139 |
2 |
p. 440- 1 p. |
artikel |
109 |
The Surgical Management of Megaureters in Duplex Systems: The Efficacy of Ureteral Tapering and Common Sheath Reimplantation
|
Weinstein, Alex J. |
|
1988 |
139 |
2 |
p. 328-331 4 p. |
artikel |
110 |
This Month in Investigative Urology
|
Droller, Michael J. |
|
1988 |
139 |
2 |
p. 390-391 2 p. |
artikel |
111 |
Torsion of an Undescended Intraabdominal Benign Testicular Teratoma
|
Ein, S.H. |
|
1988 |
139 |
2 |
p. 444- 1 p. |
artikel |
112 |
To the Editor
|
Heyns, C.F. |
|
1988 |
139 |
2 |
p. 388- 1 p. |
artikel |
113 |
Transplantation of Immortalized Bladder Epithelial Cell Lines in Denuded Mouse Bladder
|
Summerhayes, Ian C. |
|
1988 |
139 |
2 |
p. 405-409 5 p. |
artikel |
114 |
Transurethral Resection of Prostate and Bladder Tumors
|
Moffat, N.A. |
|
1988 |
139 |
2 |
p. 441- 1 p. |
artikel |
115 |
Unusual Presentation of Sigmoid Diverticulitis as an Acute Scrotum
|
Klutke, C. Georg |
|
1988 |
139 |
2 |
p. 380-381 2 p. |
artikel |
116 |
Vasectomy Reversal
|
Belker, A.M. |
|
1988 |
139 |
2 |
p. 442-443 2 p. |
artikel |
117 |
Vesicoureteral Reflux and Urinary Tract Infections in Renal Transplant Recipients
|
Hanevold, C.D. |
|
1988 |
139 |
2 |
p. 439-440 2 p. |
artikel |
118 |
Viral Etiology of Testicular Tumors
|
Algood, Chester B. |
|
1988 |
139 |
2 |
p. 308-310 3 p. |
artikel |
119 |
Volume Expansion Diuretic Renal Scan in Urinary Tract Obstruction
|
Howman-Giles, R. |
|
1988 |
139 |
2 |
p. 444-445 2 p. |
artikel |
120 |
Wilms Tumor in Three Patients With Bloom Syndrome
|
Cairney, A.E.L. |
|
1988 |
139 |
2 |
p. 437- 1 p. |
artikel |