Saint Gotthard's unwanted burden.
Aronson
S M
SM
D000724:Ancylostomiasis / Q000150:complications / Q000266:history*; D000747:Anemia, Hypochromic / Q000266:history* / Q000469:parasitology; D049672:History, 19th Century; D006801:Humans; D007558:Italy; D009784:Occupational Diseases / Q000266:history*; D011890:Railroads / Q000266:history*; D013557:Switzerland