1. Kelsen, J. & Baldassano, R. Inflammatory bowel disease: the difference between children and adults. Inflamm. Bowel Dis. 14 (Suppl. 2), S9–S11 (2008).
2. Heuschkel, R. et al. Guidelines for the management of growth failure in childhood inflammatory bowel disease. Inflamm. Bowel Dis. 14, 839–849 (2008).
3. Karlberg, J., Jalil, F., Lam, B., Low, L. & Yeung, C. Y. Linear growth retardation in relation to the three phases of growth. Eur. J. Clin. Nutr. 48 (Suppl. 1), S25–S44 (1994).
4. Rogol, A. D., Roemmich, J. N. & Clark, P. A. Growth at puberty. J. Adolesc. Health 31, 192–200 (2002).
5. Salmon, W. D. Jr & Daughaday, W. H. A hormonally controlled serum factor which stimulates sulfate incorporation by cartilage in vitro. J. Lab. Clin. Med. 116, 408–419 (1990).