Subject(s)

Congenital Hypothyroidism/epidemiology , Goiter/epidemiology , Adult , Altitude , Child , Congenital Hypothyroidism/genetics , Deafness/epidemiology , Deficiency Diseases/complications , Deficiency Diseases/epidemiology , Dwarfism/epidemiology , Ecuador , Female , Geography , Goiter/etiology , Goiter/genetics , Goiter/history , History, 16th Century , History, 17th Century , History, 18th Century , Humans , Intellectual Disability/epidemiology , Iodine/analysis , Iodine/metabolism , Iodine/urine , Male , Medicine in the Arts , Movement Disorders/epidemiology , Mutism/epidemiology , Nutrition Surveys , Rural Health , Sex Factors , Socioeconomic Factors , Thyroid Function Tests , Water Supply