B. Galobardes, M. Shaw, D. Lawlor, J. Lynch, and G. Smith. Journal of epidemiology and community health, 60 (2):
95-101(February 2006)4308<m:linebreak></m:linebreak>LR: 20071115; PUBM: Print; JID: 7909766; ppublish;<m:linebreak></m:linebreak>Farmacoeconomia.
D. Lawlor, G. Smith, and S. Ebrahim. American journal of public health, 94 (12):
2149-54(December 2004)4003<m:linebreak></m:linebreak>Critical appraisal.
B. Choi. Journal of occupational medicine. : official publication of the Industrial Medical Association, 34 (10):
979-88(October 1992)2685<m:linebreak></m:linebreak>Mesures d'associació.
A. Stoep, S. Beresford, and N. Weiss. American journal of epidemiology, 150 (2):
221(July 1999)4318<m:linebreak></m:linebreak>LR: 20051117; PUBM: Print; JID: 7910653; 0 (Contraceptives, Oral); ppublish;<m:linebreak></m:linebreak>Formació.