@misc{indiciae0e86d292d263, title = {Correlation between amniotic fluid optical density and L/S ratio.}, author = {A J Sbarra and H Michlewitz and R J Selvaraj and G W Mitchell and C L Cetrulo and E C Kelley and J L Kennedy and M J Herschel and B B Paul and F Louis}, year = {1976}, url = {https://pubmed.ncbi.nlm.nih.gov/980289/}, note = {Source identifier: 980289} }