Controlled trial of a single dose of synthetic surfactant at birth in premature infants weighing 500 to 699 grams

David Stevenson, Frans Walther, Walker Long, Matthew Sell, Thomas Pauly, Alice Gong, David Easa, Arun Pramanik, Michael LeBlanc, Endla Anday, Ramasubbareddy Dhanireddy, David Burchfield, Anthony Corbet