V. Montori, P. Wyer, T. Newman, S. Keitz, and G. Guyatt. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 173 (4):
385-90(August 2005)3902<m:linebreak></m:linebreak>Proves diagnòstiques.
E. Vittinghoff, and C. McCulloch. American journal of epidemiology, 165 (6):
710-8(March 2007)4832<m:linebreak></m:linebreak>JID: 7910653; 2006/12/20 aheadofprint; ppublish;.