“…Factors that could be explored include body habitus pre-pregnancy, truncal or central obesity, and level of physical activity. 9 Future prospective studies on comparison of rates of complication need to consider matching the level of expertise of proceduralists for the various ethnicities or when comparing the nationalities within the same ethnicities. 10 Decisions for offering opportunities for trainees (on who does the epidural) in "difficult epidurals" should be made from direct assessment of surface anatomy or sono-visualisation (present spinal ultrasound rate is <10%), 7 and by actual palpability of patients' lumbar spine.…”