Sulz, M., Zerz, A., Sagmeister, M., Roll, T., & Meyenberger, C. (2013). Perception of preference and risk-taking in laparoscopy, transgastric, and rigid-hybrid transvaginal NOTES for cholecystectomy. Swiss Medical Weekly, 143(4950), w13888. https://doi.org/10.4414/smw.2013.13888