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however, their bioavailability is low,22 and long term efficacy studies in symptomatic B 12 deficiency are lacking

[8] Drmic, D., Kolenc, D., Ilic, S., & Sikiric, P
Instead of targeting one single symptom, it coordinates multiple repair pathways at once

doi: 10.1016/j.wjorl.2016.05.002

Livy I 35, 9
