Güller, U., Warschkow, R., Ackermann, C. J., Schmied, B. M., Cerny, T., & Ess, S. (2018). Reply to technical comment on: Güller et al. Lower hospital volume is associated with higher mortality after oesophageal, gastric, pancreatic and rectal cancer resection. Swiss Medical Weekly, 148(0102), w14583. https://doi.org/10.4414/smw.2018.14583