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Description
Don't stamp over active acne, cold sores, eczema, or open wounds

The many faces of cobalamin (vitamin B12) deficiency

J Cereb Blood Flow Metab 39:17101724 Roy D, Puvvada M, Kapanaiah SKT, Patel AB (2022) Enhanced Cortical Metabolic Activity in Females and Males of a Slow Progressing Mouse Model of Amyotrophic Lateral Sclerosis

Additionally, the chart below is a snapshot comparison of the sites studied
