RT Journal Article SR Electronic T1 Penicillin is the drug of choice to treat all stages of syphilis despite a paucity of clinical trials data for the treatment of some stages, pregnant women and HIV-infected people JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 63 OP 63 DO 10.1136/ebmed-2014-110151 VO 20 IS 2 A1 Tuddenham, Susan A1 Ghanem, Khalil G YR 2015 UL http://ebm.bmj.com/content/20/2/63.abstract AB