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.
H. Zhang, E. Triche, and B. Leaderer. American journal of epidemiology, 151 (12):
1206-15(June 2000)4421<m:linebreak></m:linebreak>LR: 20071114; PUBM: Print; GR: ES05410/ES/United States NIEHS; GR: HD30712/HD/United States NICHD; JID: 7910653; 0 (Air Pollutants); ppublish;<m:linebreak></m:linebreak>Sèries temporals.