@misc{indiciae6263ef1a1ecd, title = {External four-channel tocography during delivery.}, author = {L Spätling and F Fallenstein and R Danders and A Hasenburg}, year = {1994}, doi = {10.1016/0020-7292(94)90408-1}, url = {https://pubmed.ncbi.nlm.nih.gov/7805998/}, note = {Source identifier: 7805998} }