title: ROP was always there.
authors.forename: H C
authors.initials: HC
authors.lastname: Fledelius
mesh_terms: D003718:Denmark; D049673:History, 20th Century; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D012178:Retinopathy of Prematurity / Q000266:history*