Authors: Knutsen, SF Fraser, GE Linsted, KD Beeson, WL Shavlik, DJ

Citation: Sf. Knutsen et al., Comparing biological measurements of vitamin C, folate, alpha-tocopherol and carotene with 24-hour dietary recall information in nonhispanic blacks and whites, ANN EPIDEMI, 11(6), 2001, pp. 406-416