A diaphragm is a silicone, cup-like object that you insert into your vagina to cover your cervix. Diaphragms must be used in conjunction with spermicide, which is a sperm-killing gel. A diaphragm has ...
The Prorace cervical cap took off in England in 1915. (Science Museum, London/) Donna J. Drucker is senior adviser in English as the Language of Instruction at Technische Universität Darmstadt, ...