[Morbidity during the 1st year of life. Comparisons made in urban surroundings and in rural surroundings].
D002648:Child; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases; D019369:Life; D009017:Morbidity; D012424:Rural Population
INFANT, NEWBORN/diseases; MORBIDITY/in infancy and childhood