TY - RPRT TI - Obstetrical anesthesia. AU - G ELLISON AU - N W PHILPOTT AU - G A SIMPSON PY - 1957 DO - 10.1016/s0002-9378(16)37073-9 UR - https://pubmed.ncbi.nlm.nih.gov/13444353/ ID - 13444353 ER -