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- fapunifesp (scielo)9
- pan american health organization8
- lippincott williams & wilkins6
- centers for disease control & prevention (cdc)4
- centro nacional de informacion de ciencias medicas4
- american venereal disease association3
- instituto oswaldo cruz, ministerio da saude3
- ovid technologies (wolters kluwer health)3
- biomed central2