[Endemic goiter in Bulgaria according to a survey of students].
D001203:Ascomycota; D002031:Bulgaria; D003625:Data Collection; D006042:Goiter / Q000453:epidemiology*; D006043:Goiter, Endemic; D006801:Humans; D013334:Students
GOITER/epidemiology
Endemichnata gusha v Bulgariia po materiali ot pregleda na uchenitsite.