källa

Vitamin C in the Prevention &
Treatment of Covid-19
Richard Z. Cheng, M.D., Ph.D.
Cheng Integrative Health Center
Columbia, SC, USA
BaoAn Central Hospital
Shenzhen, Guangdong, China
International Society for Orthomolecular
Medicine (ISOM)

Tack till Ulf Bittner för denna info:

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