title: Prof. Rocca speaks before opening ceremony in Hamburg.
mesh_terms: D001208:Asia; D002489:Central America; D005060:Europe; D013502:General Surgery / Q000266:history*; D006666:History of Medicine; D049673:History, 20th Century; D009656:North America; D009934:Organization and Administration; D012955:Societies, Medical / Q000266:history*; D013020:South America; D013038:Specialization