Elfberg Björn-Åke, Nilsson Folke, and Selking Örjan. 1989. “Parietal Cell Vagotomy and Truncal Vagotomy in Elective Duodenal Ulcer Surgery—Results After Six to Twelve Years”. Upsala Journal of Medical Sciences 94 (2):129-36. https://doi.org/10.3109/03009738909178558.