Comment on the article by Hernandez-Avila et al.
Spector
T D
TD
Hochberg
M C
MC
D001172:Arthritis, Rheumatoid / Q000517:prevention & control*; D003276:Contraceptives, Oral / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D012307:Risk Factors
D003276:Contraceptives, Oral