Annals of emergency medicine journal club: frequent fliers, internal and external validity, and problems with making continuous variables binary answers to the may 2009 journal club questions.
作者信息
Arora Sanjay, Schriger David L
机构信息
Department of Emergency Medicine, Keck School of Medicine/University of Southern California, Los Angeles, CA.
出版信息
Ann Emerg Med. 2009 Oct;54(4):628-34. doi: 10.1016/j.annemergmed.2009.04.013.