Obstetric analgesia: a comparison of patient-controlled meperidine, remifentanil, and fentanyl in labour M.R. Douma, R.A. Verwey, C.E. Kam-Endtz, P.D. van der Linden, R Stienstra British Journal of Anaesthesia Volume 104, Issue 2, Pages 209-215 (February 2010) DOI: 10.1093/bja/aep359 Copyright © 2010 The Author(s) Terms and Conditions
Fig 1 Mean VAS pain scores as a function of time for meperidine, remifentanil, and fentanyl. Vertical bars represent sd. British Journal of Anaesthesia 2010 104, 209-215DOI: (10.1093/bja/aep359) Copyright © 2010 The Author(s) Terms and Conditions