Barrier contraceptive and sexually transmitted disease study is questioned.
Gunn
R A
RA
Greenspan
J R
JR
Rolfs
R T
RT
D017280:Condoms / Q000706:statistics & numerical data*; D003274:Contraceptive Devices, Female / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D012107:Research Design; D015983:Selection Bias; D015231:Sexually Transmitted Diseases, Bacterial / Q000453:epidemiology* / Q000517:prevention & control