title: From trades to professions.
authors.affiliation: London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT. nick.black@lshtm.ac.uk
authors.forename: Nick
authors.initials: N
authors.lastname: Black
mesh_terms: D006281:Health Occupations / Q000266:history*; D049669:History, 16th Century; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D016304:Hospitals, Private / Q000266:history; D006801:Humans; D008131:London; D011364:Professional Practice / Q000266:history*; D012955:Societies, Medical / Q000266:history*; D013038:Specialization / Q000266:history*