On average 20 height measurements per person were obtained from birth until adulthood (most between ages 0–16 y). About 25% of the records requested had gone missing over the years or could not be obtained. The final number of individuals with growth data and DNA samples was N = 4,311. The number of singletons with growth and genotype data after exclusions explained in the Statistical Analyses was N = 3,538. The measurement times were chosen by national recommendations but there was some variation between individuals.
