H. Bucher, G. Guyatt, L. Griffith, and S. Walter. Journal of clinical epidemiology, 50 (6):
683-91(June 1997)2443<m:linebreak></m:linebreak>Metaanàlisi.
H. Brønnum-Hansen. Journal of epidemiology and community health, 53 (5):
300-5(May 1999)4322<m:linebreak></m:linebreak>LR: 20061115; PUBM: Print; JID: 7909766; ppublish;<m:linebreak></m:linebreak>Risc atribuïble.