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"NHANES I." (n.d.). Fullformexpand.com. Retrieved May 1, 2026, from https://www.fullformexpand.com/nhanes-i/national-health-and-nutrition-examination-survey-i.
NHANES I. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/nhanes-i/national-health-and-nutrition-examination-survey-i (Accessed: 1 May 2026).