1. http://www.ibge.gov.br Site of the Geography and Statistics Brazilian Institute (Instituto Brasileiro de Geografia e Estatística) 2003
2. Sites of the Ministry of Health (Ministério da Saúde) of the Brazilian Government http://www.saude.gov.br 2003 http://www.datasus.gov.br
3. Reproductive hazards in women over 40 years;Seneviratne;Int J Gynecol Obstet,1994
4. Quinacrine hydrochloride pellets: preliminary data on a nonsurgical method of female sterilization;Zipper;Int J Gynaecol Obstet,1980
5. Quinacrine sterilization: a middle road;Potts;Contraception,2001