@misc{indiciae7220e4bd9d30, title = {Epidural narcotics and dural puncture.}, author = {D B Welch}, year = {1981}, doi = {10.1016/s0140-6736(81)90174-4}, url = {https://pubmed.ncbi.nlm.nih.gov/6109101/}, note = {Source identifier: 6109101} }