Authors:
Comstock, GW
Burke, AE
Hoffman, SC
Norkus, EP
Gross, M
Helzlsouer, KJ
Citation: Gw. Comstock et al., The repeatability of serum carotenoid, retinoid, and tocopherol concentrations in specimens of blood collected 15 years apart, CANC EPID B, 10(1), 2001, pp. 65-68
Citation: Gw. Comstock et al., Effects of repeated freeze-thaw cycles on concentrations of cholesterol, micronutrients, and hormones in human plasma and serum, CLIN CHEM, 47(1), 2001, pp. 139-142
Citation: Sc. Hoffman et al., Controlled trial of the effect of length, incentives, and follow-up techniques on response to a mailed questionnaire (vol 148, 1007, 1998), AM J EPIDEM, 149(3), 1999, pp. 293-293