Answer:
hehe thanks for saying that
Explanation:
any way thanks for the points
Do not trust people that share links these people hack and put viruses into your phone/computer’s
Explanation:
a) This is a retrospective observational study.
b) This is an appropriate choice due to the rareness of MS.
c) The subjects were US military personnel, some of which had developed MS.
d) The variables were the vitamin D blood levels and whether or not the person developed MS.
