Surfactant protein profile of pulmonary surfactant in premature infants.
Ballard PL, Merrill JD, Godinez RI, Godinez MH, Truog WE, Ballard RA. Surfactant protein profile of pulmonary surfactant in premature infants. Am J Respir Crit Care Med. 2003 Nov 01; 168(9):1123-8.