Vitamin D Deficiency and Covid-19 Its central role in the world pandemic
Doctors David C Anderson and David S Grimes are the authors of the book
published in 2020 and translated also in italian.
I thank Dr Anderson for allowing me to make the digital copy of the book available to the readers of the blog in PDF format (Italian and English version)
I invite you to read the book. If you think so, make a small donation to www.immunityinstitute.org (firstname.lastname@example.org)