Sources:
http://www.nchpjournals.com/manuscript/uploads/article_602.pdf
https://ods.od.nih.gov/factsheets/Biotin-HealthProfessional/
https://www.ncbi.nlm.nih.gov/pubmed/16871773
https://www.sciencedirect.com/science/article/abs/pii/S1871141307001369
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1567081/
https://www.sciencedirect.com/science/article/pii/S0098299705000464