Clinical studies on intrauterine rings
especially the present state of contraception in Japan and the experiences in the use of intrauterine rings
Clinic and Society for Constructive Birth Control and Racial Progress (C.B.C.)
Racial Solubles, Racial Cap, Racial Sponge
Collatex
Contraceptive Sponge
Combined Hormonal Contraception
FSRH Guideline
Combined Multiload Cu250 Contraceptive