PubMed ID: 1584570 Author(s): Repka MX, Hudak ML, Parsa CF, Tielsch JM. Calf lung surfactant extract prophylaxis and retinopathy of prematurity. Ophthalmology. 1992 Apr;99(4):531-6. PMID 1584570 Journal: Ophthalmology, Volume 99, Issue 4, Apr 1992 Retinopathy …