@misc{indiciae189574bbf28e, title = {Relationship between Grade III placentas and biparietal diameter determinations.}, author = {S S Ashton and M P Russo and N V Simon and D M Shearer}, year = {1983}, doi = {10.7863/jum.1983.2.3.127}, url = {https://pubmed.ncbi.nlm.nih.gov/6842671/}, note = {Source identifier: 6842671} }