@misc{indiciae4a12bceab3f0, title = {Computer analysis of labour progression.}, author = {E A Friedman and B H Kroll}, year = {1969}, doi = {10.1111/j.1471-0528.1969.tb05788.x}, url = {https://pubmed.ncbi.nlm.nih.gov/5359671/}, note = {Source identifier: 5359671} }