Who discovered that intestinal worm infections could be diagnosed by finding eggs in the faeces?
D002648:Child; D005243:Feces / Q000469:parasitology*; D005260:Female; D006373:Helminthiasis / Q000175:diagnosis / Q000266:history* / Q000469:parasitology; D006376:Helminths / Q000302:isolation & purification*; D049672:History, 19th Century; D006801:Humans; D008488:Medical Illustration; D012552:Schistosomiasis / Q000175:diagnosis / Q000266:history / Q000469:parasitology