Positive benefits of theophylline in a randomized, double-blind, parallel-group, placebo-controlled study of low-dose, slow-release theophylline in the treatment of COPD for 1 year
Titel:
Positive benefits of theophylline in a randomized, double-blind, parallel-group, placebo-controlled study of low-dose, slow-release theophylline in the treatment of COPD for 1 year
Auteur:
ZHOU, Y umin WANG, X iaoping ZENG, X iangyi QIU, R ong XIE, J unfeng LIU, S hengming ZHENG, J ingping ZHONG, N anshan RAN, P ixin