title: Letter to the editor Re: Singh AJ et al. Pediatr Res 67:619-623.
authors: Heqiang
authors: H
authors: Sun
authors: Yuan
authors: Y
authors: Shi
mesh_terms: D000818:Animals; D006801:Humans; D008099:Liver / Q000378:metabolism*; D008168:Lung / Q000187:drug effects*; D011663:Pulmonary Surfactants / Q000008:administration & dosage*; D012127:Respiratory Distress Syndrome, Newborn / Q000188:drug therapy*; D014801:Vitamin A / Q000031:analogs & derivatives*; D014815:Vitamins / Q000008:administration & dosage* / Q000493:pharmacokinetics*
chemical_list: D011663:Pulmonary Surfactants; D014815:Vitamins; D014801:Vitamin A