Some resources that you may want to visit for more information:

The Vitamin D Council – Dr. John Cannell –

SUNARC: Sunlight, Nutrition, and Health Research Center. Website of vitamin D expert Dr. William Grant

GrassrootsHealth – Carrole Baggerly  Presentations by the experts through UCSDtv:

Direct – MS A Multiple Sclerosis site – Ashton Embry, Ph.D.

University California Riverside – About Vitamin D

Vitamin D Wiki – compiled by Henry Lahore