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In Japan, a pituitary-extracted human GH (phGH), Crescormon®, was approved for the treatment of pituitary dwarfism in 1975. The Study Group of Pituitary Dysfunction was organized by the Ministry of Health and Welfare (MHW) in 1973 and prepared the "Diagnostic Handbook: Pituitary Dwarfism" guidelines in 1974. Eligibility assessments for phGH treatment were conducted by the research group on pituitary dwarfism (later the Foundation for Growth Science [FGS] GH Treatment Eligibility Assessment Committee); however, there were 200-300 patients on the waiting list. GH treatment has been financially supported by the Grant-in-Aid Program for Chronic Diseases in Childhood, MHW, since 1974. In 1984, phGH was discontinued in the United States due to reports of the onset of Creutzfeldt-Jakob disease in patients treated with phGH. Japan approved the use of methionyl hGH in 1986 and recombinant hGH in 1988. As a result, the phGH disappeared from the market. The role of the Eligibility Assessment Committee of the FGS shifted to the provision of second opinions about diagnoses and treatment appropriateness. Since then, the indications for GH treatment of pediatric growth disorders have expanded to include other pediatric growth disorders such as Turner syndrome, achondroplasia/hypochondroplasia, etc. [ABSTRACT FROM AUTHOR]