Targeting messages to supplement users.
Raab
C A
CA
Oregon State University, Corvallis 97331.
Bock
M A
MA
Carpenter
K
K
Medeiros
D
D
Ortiz
M
M
Read
M
M
Schutz
H G
HG
Sheehan
E T
ET
Williams
D K
DK
D000328:Adult; D000368:Aged; D005260:Female; D006266:Health Education / Q000379:methods*; D006801:Humans; D008297:Male; D008402:Mass Media; D008875:Middle Aged; D008903:Minerals / Q000008:administration & dosage*; D015205:Northwestern United States; D010342:Patient Acceptance of Health Care; D011897:Random Allocation; D015206:Southwestern United States; D014815:Vitamins / Q000008:administration & dosage*
D008903:Minerals; D014815:Vitamins