Low validity of a seven-item fruit and vegetable food frequency questionnaire among third-grade students.
J Am Diet Assoc
; 97(1): 66-8, 1997 Jan.
Article
in En
| MEDLINE
| ID: mdl-8990421
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Vegetables
/
Diet Records
/
Eating
/
Fruit
Type of study:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
Limits:
Child
/
Humans
Language:
En
Journal:
J Am Diet Assoc
Year:
1997
Type:
Article
Affiliation country:
United States