E. Singer, and R. Bossarte. American journal of preventive medicine, 31 (5):
411-8(November 2006)4805<m:linebreak></m:linebreak>JID: 8704773; 2006/03/08 received; 2006/07/10 revised; 2006/07/24 accepted; ppublish;<m:linebreak></m:linebreak>Ètica.
R. Horwitz, B. Singer, R. Makuch, and C. Viscoli. Journal of clinical epidemiology, 51 (4):
305-7(April 1998)2897<m:linebreak></m:linebreak>Comparacions múltiples.
R. Jaeschke, J. Singer, and G. Guyatt. Controlled clinical trials, 10 (4):
407-15(December 1989)4453<m:linebreak></m:linebreak>LR: 20071115; PUBM: Print; JID: 8006242; ppublish;<m:linebreak></m:linebreak>MDCI.