Successful recruitment for a four-year dietary intervention: The polyp prevention trial
Titel:
Successful recruitment for a four-year dietary intervention: The polyp prevention trial
Auteur:
Murphy, Patricia A. Hayes, Diane Viscofsky, Nancy Bloch, Abby DeGraffinreid, Cecilia Gahagan, Betsy Mateski, Donna J. Snow, Dot Schatzkin, Arthur Daston, Sandra Price, Helen