Soria, J [Determination of the lecithin content in amniotic fluid by colorimetry]. [electronic resource] - Ginecologia y obstetricia de Mexico Oct 1979 - 245-51 p. digital Publication Type: English Abstract; Journal Article ISSN: 0300-9041 Subjects--Topical Terms: Amniotic Fluid--analysisColorimetryFemaleHumansInfant, NewbornPhosphatidylcholines--analysisPregnancyPrenatal Diagnosis--methodsRespiratory Distress Syndrome, Newborn--diagnosisSphingomyelins--analysis