[The premature infant as a public health problem in various undeveloped countries].
D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007234:Infant, Premature; D011634:Public Health; D012423:Rural Health; D012424:Rural Population
INFANT, PREMATURE; RURAL CONDITIONS
El niño prematuro como problema de salud pública en algunos países poco desarrollados.