1. [1] Osteoporosis prevention and treatment guidelines 2015, Osteoporosis Prevention and Treatment Guidelines Development Committee (Japan Osteoporosis Society, Japan Bone Metabolism Society, Osteoporosis Foundation), Life Science Publisher, Japan. (in Japanese)
2. [2] C. M. Weaver, Calcium. In: B. A. Bowman and R. M. Russell, eds., Present Knowledge in Nutrition 9th ed, Vol. I. ILSI Press, Washington D.C. (2006) 373–382.
3. [3] B. Dawson-Hughes, Osteoporosis. In: B. A. Bowman and R. M. Russell, eds., Present Knowledge in Nutrition 9th ed, Vol. I. ILSI Press, Washington D.C. (2006) 687–697.
4. [4] Milk and Dairy Products Statistics 2021, Agriculture, Forestry and Fisheries Statistics Annual Report, Ministry of Agriculture, Forestry and Fisheries. (in Japanese) https://www.maff.go.jp/j/tokei/kouhyou/gyunyu/
5. [5] World Dairy Situation 2019, IDF Dairy Policy and Economic Standing Committee Report, International Dairy Federation Japan National Committee. (in Japanese) https://www.nyukyou.jp/support/farming/index04.html