ENDEMIC GOITER IN THE REPUBLIC OF PARAGUAY. I. APPARENT FAILURE OF THE USE OF IODIZED SALT IN THE PREVENTION OF ENDEMIC GOITER
EL BOCIO END'EMICO EN LA REP'UBLICA DEL PARAGUAY. I. FALLA APARENTE DEL EMPLEO DE LA SAL YODADA EN LA PROFILAXIS DEL BOCIO END'EMICO