7[5]Connie L.Celum,et al.The practitioner's handbook for The Management of Sexually Transmitted Diseases,September,1994 Health Sciences Center for Educational Resources,University of Washington.
8[7]Population Council,Reproductive Tract Infections,a set of fact sheets.
9[8]Paul.D.Blumenthal,et al,pocket Guide for Family Planning service Providers 1996.1998 Second Edition,Johns Hopkins University Program for International Education in Reproduction Health (JHPIEGO),United states Agency for International Development.
