title: Validation of the L/S ratio determined by digital scanning densitometry.
authors.forename: M Laura
authors.initials: ML
authors.lastname: Parnas
authors.forename: Janalee
authors.initials: J
authors.lastname: Renshaw
authors.forename: David G
authors.initials: DG
authors.lastname: Grenache
mesh_terms: D000653:Amniotic Fluid / Q000737:chemistry; D003720:Densitometry / Q000379:methods*; D006801:Humans; D054709:Lecithins / Q000032:analysis*; D008171:Lung Diseases / Q000175:diagnosis*; D011663:Pulmonary Surfactants / Q000032:analysis*; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D054709:Lecithins; D011663:Pulmonary Surfactants; D013109:Sphingomyelins