Bärebring , L., Lamberg-Allardt , C., Thorisdottir , B., Ramel , A., Söderlund , F., Arnesen , E.K., Nwaru , B.I., Dierkes , J. and Åkesson , A. 2023. Intake of vitamin B12 in relation to vitamin B12 status in groups susceptible to deficiency: a systematic review. Food & Nutrition Research. 67, (Jun. 2023). DOI:https://doi.org/10.29219/fnr.v67.8626.