Recker, R. R.; Davies, K. M.; Dowd, R. M.; Heaney, R. P. (1999). The Effect of Low-Dose Continuous Estrogen and Progesterone Therapy with Calcium and Vitamin D on Bone in Elderly Women. A Randomized, Controlled Trial. Ann Intern Med, June 1999, 130(11):897-904. doi: http://dx.doi.org/10.7326/0003-4819-130-11-199906010-00005

Heaney, R. P.; McCarron, D. A.; Dawson-Hughes, B.; Oparil, S.; Berga, S. L.; Stern, J. S.; Barr, S. I.; Rosen, C. J. (1999). Dietary Changes Favorably Affect Bone Remodeling in Older Adults. J Am Diet Assoc, October 1999, 99(10):1228-1233. doi: http://dx.doi.org/10.1016/S0002-8223(99)00302-8

Gong, G.; Johnson, M. L.; Barger-Lux, M. J.; Heaney, R. P. (1999). Association of Bone Dimensions with a Parathyroid Hormone Gene Polymorphism in Women. Osteoporos Int, April 1999, 9(4):307-311. doi: http://dx.doi.org/10.1007/s001980050152

Heaney, R. P.; Dowell, M. S.; Barger-Lux, M. J. (1999). Absorption of Calcium as the Carbonate and Citrate Salts, with some Observations on Method. Osteoporos Int, January 1999, 9(1):19-23. doi: http://dx.doi.org/10.1007/s001980050111

Power, M. L.; Heaney, R. P.; Kalkwarf, H. J.; Pitkin, R. M.; Repke, J. T.; Tsang, R. C.; Schulkin, J. (1999). The Role of Calcium in Health and Disease. Am J Obstet Gynecol, December 1999, 181(6):1560-1569. doi: http://dx.doi.org/10.1016/S0002-9378(99)70404-7

Heaney, R. P.; Recker, R. R.; Ryan, R. A. (1999). Urinary Calcium in Perimenopausal Women: Normative Values. Osteoporos Int, January 1999, 9(1):13-18. doi: http://dx.doi.org/10.1007/s001980050110

Gong, G.; Stern, H. S.; Cheng, S. C.; Fong, N.; Mordeson, J.; Deng, H. W.; Recker, R. R. (1999). The Association of Bone Mineral Density with Vitamin D Receptor Gene Polymorphisms. Osteoporos Int, January 1999, 9(1):55-64. doi: http://dx.doi.org/10.1007/s001980050116

Recker, R. R.; Davies, K. M.; Dowd, R. M.; Heaney, R. P. (1999). The Effect of Low Dose Continuous Estrogen and Progesterone Therapy with Calcium and Vitamin D on Bone in Elderly Women: A Randomized, Controlled Trial. Obstetrical and Gynecological Survey, November 1999, 54(11):711. doi: http://dx.doi.org/10.1097/00006254-199911000-00021

Heaney, Robert P.; McCarron, David A.; Dawson-Hughes, Bess; Oparil, Suzanne; Berga, Sarah L.; Stern, Judith S.; Barr, Susah I.; Rosen, Clifford J. (1999). Dietary Changes Favorably Affect Bone Remodeling in Older Adults. Journal of the American Dietetic Association, October 1999, 99(10):1228-1233. doi: http://dx.doi.org/10.1016/s0002-8223(99)00302-8

Heaney,R. P. (1999). Chapter 3 - Aging and Calcium Balance. In Clifford J. Rosen, Julie Glowacki and John P. Bilezikian (eds), The Aging Skeleton. p. 19-26. doi:http://dx.doi.org/http://dx.doi.org/10.1016/b978-012098655-2/50005-3