Bourguignon, JP., Vanderschuerenlodeweyckx, M., Wolter, R., Malvaux, P., Craen, M., Ducaju, MVL., Ernould, C., & Franchimont, P. (1982). Hypopituitarism and Idiopathic Delayed Puberty - a Longitudinal-study in An Attempt To Diagnose Gonadotropin-deficiency Before Puberty. Journal of Clinical Endocrinology and Metabolism, 54(4), 733-744. https://doi.org/10.1210/jcem-54-4-733 (Original work published 1982)