Elevated Vitamin B12 Levels and Cancer Risk in UK Primary Care: A THIN Database Cohort Study.
Johan F H ArendtHenrik Toft SorensenLaura Jane HorsfallIrene PetersenPublished in: Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology (2019)
Elevated B12 may mark occult cancer.