title: Letter: Treatment schedule for secondary syphilis.
mesh_terms: D004305:Dose-Response Relationship, Drug; D006801:Humans; D010401:Penicillin G Benzathine / Q000008:administration & dosage* / Q000627:therapeutic use; D012008:Recurrence; D013587:Syphilis / Q000188:drug therapy*; D013997:Time Factors
chemical_list: D010401:Penicillin G Benzathine