Comment on

• RETRACTED: Comparative efficacy of hormone replacement therapy, etidronate, calcitonin, alfacalcidol, and vitamin K in postmenopausal women with osteoporosis: The Yamaguchi Osteoporosis Prevention Study.

  Ishida Y, Kawai S. Ishida Y, et al. Am J Med. 2004 Oct 15;117(8):549-55. doi: 10.1016/j.amjmed.2004.05.019. Am J Med. 2004. Retraction in: Am J Med. 2025 May;138(5):918-919. doi: 10.1016/j.amjmed.2025.03.001. PMID: 15465502 Retracted. Clinical Trial.
• Concerns About the Integrity of the Yamaguchi Osteoporosis Prevention Study (YOPS) Report, Am J Med. 2004;117:549-555.

  Avenell A, Grey A, Gamble GD, Bolland MJ. Avenell A, et al. Am J Med. 2020 Jun;133(6):e311-e314. doi: 10.1016/j.amjmed.2020.02.007. Am J Med. 2020. PMID: 32532372 No abstract available.