[Why, Clara, why?].
Carlsson
M
M
D003462:Cuba; D006676:History of Nursing; D049672:History, 19th Century; D006805:Human Experimentation; D006801:Humans; D007114:Immunization; D010678:Philately; D014330:Tropical Medicine; D014481:United States; D014857:Warfare; D015004:Yellow Fever