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1:07:22
YouTube
Dr. John Campbell
How much Vitamin D should I take?
Consultant Physician, medical researcher and author, Dr David Grimes conducted much original research on the essential to life Vitamin D. Buy his inexpensive latest book here. https://yorkbookshop.com/health-and-personal-development/307-vitamin-d-deficiency-and-covid-19-its-central-role-in-a-world-pandemic.html 2 minor corrections - 150nmol/L ...
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