Lecithin-sphingomyelin ratios in tracheal and pharyngeal aspirates in respiratory distress syndrome. A preliminary report.

@article{Blumenfeld1974LecithinsphingomyelinRI,
  title={Lecithin-sphingomyelin ratios in tracheal and pharyngeal aspirates in respiratory distress syndrome. A preliminary report.},
  author={Thomas A Blumenfeld and John M. Driscoll and LeAnn S. James},
  journal={The Journal of pediatrics},
  year={1974},
  volume={85 3},
  pages={
          403-7
        }
}