1. Japanese Management and Coordination Agency, Statistics Bureau (1989) Mini statistical handbook. Japanese Management and Coordination Agency, Statistics Bureau, Tokyo
2. Fujii Y, Tsunenari T, Tsutsumi M, Fukase M, Yoshimoto Y, Fujita T (1988) Bone mineral content in Japanese. Bone Miner 4:311–312
3. Inoue T (1990) Osteoporosis: the view of the orthopaedic surgeon. J Bone Miner Metab 9:1–8 (in Japanese)
4. Ishikawa M, Kushida K, Deguchi T, Matsubayashi Y, Inoue T (1989) Epidemiology of hip fractures in Iwata and Fujieda cities Shizuoka, Japan. Cent Jpn J Orthop Traumat 32:1014–1016 (in Japanese)
5. Norimatsu H, Mori S, Uesato T, Yoshikawa T, Katsuyama N (1989) Bone mineral density of the spine and proximal femur in normal and osteoporotic subjects in Japan. Bone Miner 5:213–222