Letter regarding "Prevalence of growth hormone deficiency in previously GH‐treated young adults with Prader‐Willi syndrome" by Donze et al. - Höybye, Charlotte; Tauber, Maithé; Angulo, Moris A.; Eiholzer, Urs; Driscoll, Daniel J.; Cassidy, Suzanne B.; Holland, Antony J. (Clinical Endocrinology, 2019)