@misc{indiciaeac24708a9281, title = {[Episensor: a new method to identify the peridural space].}, author = {A Espejo Martínez and M Lobo Sánchez and F Ramajoli and P Merati}, year = {1990}, url = {https://pubmed.ncbi.nlm.nih.gov/2274229/}, note = {Source identifier: 2274229} }