RT Book, Section A1 Wells, Barbara G. A1 DiPiro, Joseph T. A1 Schwinghammer, Terry L. A1 DiPiro, Cecily V. SR Print(0) ID 1144734677 T1 Contraception T2 Pharmacotherapy Quick Guide YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259586439 LK accesspharmacy.mhmedical.com/content.aspx?aid=1144734677 RD 2024/04/24 AB Contraception is the prevention of pregnancy by inhibiting sperm from reaching a mature ovum or by preventing a fertilized ovum from implanting in the endometrium.