RT Journal
A1 Bjelakovic G, Gluud C
T1 Vitamin and mineral supplement use in relation to all-cause mortality in the iowa women's health study: Comment on “dietary supplements and mortality rate in older women”
JF Archives of Internal Medicine
JO Archives of Internal Medicine
YR 2011
FD October 10
VO 171
IS 18
SP 1633
OP 1634
DO 10.1001/archinternmed.2011.459
UL http://dx.doi.org/10.1001/archinternmed.2011.459
AB 
Many studies have been conducted to verify the assumed beneficial effects of vitamin and mineral supplements. Although the results of epidemiologic observational studies almost uniformly have been positive, the results of individual randomized clinical trials undertaken to corroborate this hypothesis have remained largely inconclusive. Only through the systematic review of several randomized clinical trials have we gained the power and the precision to detect clinical harms and benefits.