[Retinopathy of prematurity in infants with very low birthweight, especially in extreme prematurity].
D003452:Cryosurgery; D006801:Humans; D007231:Infant, Newborn; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects; D012178:Retinopathy of Prematurity / Q000209:etiology* / Q000628:therapy