@misc{indiciae9691a784fc1d, title = {[Spinal anesthesia--time for reevaluation? Postspinal headache].}, author = {S A Evensen and P Stavem and R Stien}, year = {1989}, url = {https://pubmed.ncbi.nlm.nih.gov/2617492/}, note = {Source identifier: 2617492} }