?Acquired Growth Hormone Deficiency and Hypogonadotropic Hypogonadism in a Subject With Repeated Head Trauma, or Tintin Goes to the Neurologist,? Antoine Cyr, Louis-Olivier Cyr, Claude Cyr, Canadian Medical Association Journal, vol. 171, no. 12, December 7, 2004, pp. 1433-4. (http://dx.doi.org/10.1503/cmaj.1041405).
(Thanks to Doug Hatlelid for bringing this to our attention.)
The authors explain that:
We describe the unique case of a public figure who is well known for having delayed
pubertal development and statural growth (Fig. 1). We believe we have discovered why Tintin, the young reporter whose stories were published between 1929 and 1975, never grew taller and never needed to shave.
(That’s an excerpt from the article “Icky Cutesy Research Review,” published in AIR 11:1.)