History of otolaryngology in Puerto Rico: 1898-1989 (Part 1).
Rullán
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D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010036:Otolaryngology / Q000193:education / Q000266:history* / Q000331:legislation & jurisprudence; D011647:Puerto Rico; D012577:Schools, Medical / Q000266:history; D012955:Societies, Medical / Q000266:history; D014495:Universities / Q000266:history