Nilsson , A. ., Danielson , K. ., Engberg , G. ., & Henneberg , S. . (1990). Emla for Pain Relief During Arterial Cannulation: A double-blind, placebo-controlled study of a lidocaine-prilocaine cream. Upsala Journal of Medical Sciences, 95(1), 87–94. https://doi.org/10.3109/03009739009178579