A step in the right direction.
Gerry K
GK
Schwalfenberg
D000328:Adult; D002170:Canada; D019587:Dietary Supplements; D004305:Dose-Response Relationship, Drug; D017408:Guidelines as Topic; D006293:Health Promotion; D006801:Humans; D008297:Male; D008875:Middle Aged; D014807:Vitamin D / Q000008:administration & dosage*
D014807:Vitamin D