any research on collaboration model for clinical nutrition and public health nutrition?
If you mean clinically studies and how that relates to what a person should take. Then I suggest you look at Dr Ray Strand www.bio-nutrition.org i think. There are a few others and Lyle MacWilliam comes to a blended standard on seven studies in his book
Comparative Guide to nutritional supplements.
If you want some type of guide you can ask the scientists at this link
http://www.unitoday.com/sendpage/index.cfm?page=http://www.usana.com/en/products/au/askthescientists.shtml