High contraceptive failure rate of rhythm method: possible involvement of pheromones.
Kumar
Raju Suresh
RS
Narayanan
Sareesh Naduvil
SN
Paval
Jaijesh
J
D003267:Contraception; D005260:Female; D006801:Humans; D011247:Pregnancy; D012724:Sex Attractants
D012724:Sex Attractants