Fanaroff, Avroy A; Stoll, Barbara J; Wright, Linda L; Carlo, Waldemar A; Ehrenkranz, Richard A; Stark, Ann R; Bauer, Charles R; Donovan, Edward F; Korones, Sheldon B; Laptook, Abbot R; Lemons, James A; Oh, William; Papile, Lu-Ann; Shankaran, Seetha; Stevenson, David K; Tyson, Jon E; Poole, W Kenneth; NICHD Neonatal Research Network