Primary outcome(s): Abdominal visceral fat volume;Body mass index Study Design: Observational Study Model : Case-control, Time Perspective : Cross-sectional, Enrollment : 250, Biospecimen Retention :
Conditional logistic regression was used for all models. OR = odds ratio; CI = confidence interval. 1Cut-points for season specific quartiles (nmol/L): winter = Q1: ≤18.3, Q2: >18.3–≤26.9, Q3: >2
