Vitamin insufficiency after surgery for oesophagogastric neoplasms: a study protocol for a prospective intervention study
Ariadne L van der Velden, Thomas A Vermeer, Evert-Jan G Boerma, Eric HJ Belgers, Jan HMB Stoot, Mathie PG Leers, Meindert N Sosef, Guy HEJ Vijgen
BMJ Open Jul 2023, 13 (7) e067981; DOI: 10.1136/bmjopen-2022-067981