title: Recent trend in preference of contraceptive methods--pills down, diaphragm on rise: a retrospective evaluation.
mesh_terms: D003267:Contraception / Q000379:methods*; D003270:Contraceptive Agents; D003273:Contraceptive Devices / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans
chemical_list: D003270:Contraceptive Agents