We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleObservations on syphilis in Addis Ababa. 2. Prevalence and natural history.AuthorsFriedman, P S; Wright, D JPublicationSexually Transmitted Infections, 1977, Vol 53, Issue 5, p276ISSN1368-4973Publication typearticleDOI10.1136/sti.53.5.276