1. Diagnosis of the respiratory distress syndrome by amniocentesis;Gluck;AM. J. OBSTET. GYNECOL.,1971
2. Prenatal prediction of the respiratory distress syndrome (RDS);Borer;Pediatr. Res.,1971
3. Amniotic fluid lecithin/sphingomyelin ratio as an assessment of fetal lung maturity;Bryson;AM. J. OBSTET. GYNECOL.,1972
4. LIS ratio in predicting pulmonary maturity in utero;Hobbins;Obstet. Gynecol.,1972
5. Determination of lecithin-sphingomyelin ratio in amniotic fluid;Kulkarni;Obstet. Gynecol.,1972