TY - JOUR AU - Lindblom, A; Jansson, O; Jeppsson, B TI - Nitrous oxide for colonoscopy discomfort: a randomized double-blind study JO - Endoscopy VL - 26 PY - 1994 DO - 10.1055/s-2007-1008968 L3 - PubMed-ID: 7915672 SP - 283 EP - 286 N1 - et al. ER -