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10.1016/j.scitotenv.2019.134406 23 LiuT.LiN.ZhuJ.YuG.GuoK.ZhouL.et al (2014)

Or it would be possible investigate the repassivation potential

10.1155/2018/7061898 68 GangulyP.El-JawhariJ

GI changes (constipation or diarrhea) are more often linked to B12 deficiency or underlying gut conditions that also impair B12 absorption
