The mean HSDS in this cohort is consistently above +2 SDS from age 2 onwards. The population references (dotted lines) are for Korean boys and girls, respectively. The ranges are given in percentiles. It is noteworthy that not all patients are tall compared with the reference charts. Redrawn from Kwun et al. [24]. Reproduced by permission of the Korean Academy of Medical Sciences. Previously published by Lauffer et al [1]. Reproduced with permission from the Publisher S. Karger AG, Basel, and authors.