[1]
M. Sulz, A. Zerz, M. Sagmeister, T. Roll, and C. Meyenberger, “Perception of preference and risk-taking in laparoscopy, transgastric, and rigid-hybrid transvaginal NOTES for cholecystectomy”, Swiss Med Wkly, vol. 143, no. 4950, p. w13888, Dec. 2013.