Anthropometry
Preschooler height and weight was assessed at both baseline and follow-up visits. Preschooler height and weight was measured in a private setting, dressed in light clothing and shoes removed. A trained researcher measured height and weight to the nearest 0.1 unit (cm and kg, respectively), and a third measure was taken if measurements differed by more than 0.5 units. Body mass index (BMI) z-score was calculated based on the age and sex specific national growth standards [