BTW, does anybody know how to read Table 2 and 3 of this article?

mg/day/kg = milligrams a day over kg of weight (of subject, I assume)
mean (standard deviation) = mean (average) standard deviation represents a values average from the average.
So if the average value of a group is 50, and the standard deviation is 5, most values fell between 45 and 55, where as if the mean or average is 50 and the standard deviation is 25, most values fall betwee, 25 and 75.
range = minimums and maximum values
