Clague, A E Lidocaine interference in lecithin/sphingomyelin ratios. [electronic resource] - American journal of obstetrics and gynecology May 1979 - 229-30 p. digital Publication Type: Case Reports; Journal Article ISSN: 0002-9378 Standard No.: 10.1016/0002-9378(79)90893-7 doi Subjects--Topical Terms: AdultAmniotic Fluid--analysisChemical PhenomenaChemistryFemaleHumansLidocainePhosphatidylcholines--analysisPregnancySphingomyelins--analysis