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Howard A, Wright JG, Hedden D.Howard A, et al.Spine (Phila Pa 1976). 1998 Nov 15;23(22):2404-11. doi: 10.1097/00007632-199811150-00009.Spine (Phila Pa 1976). 1998.PMID: 9836354
Thomas DP, Howard AW, Cole WG, Hedden DM.Thomas DP, et al. Among authors: howard aw.J Pediatr Orthop. 2001 Sep-Oct;21(5):565-9.J Pediatr Orthop. 2001.PMID: 11521019
Smith PL, Donaldson S, Hedden D, Alman B, Howard A, Stephens D, Wright JG.Smith PL, et al. Among authors: howard a.Spine (Phila Pa 1976). 2006 Sep 15;31(20):2367-74. doi: 10.1097/01.brs.0000240204.98960.dd.Spine (Phila Pa 1976). 2006.PMID: 16985466
Donaldson S, Hedden D, Stephens D, Alman B, Howard A, Narayanan U, Wright JG.Donaldson S, et al. Among authors: howard a.Spine (Phila Pa 1976). 2007 Feb 1;32(3):363-7. doi: 10.1097/01.brs.0000253605.71168.2e.Spine (Phila Pa 1976). 2007.PMID: 17268269
Donaldson S, Stephens D, Howard A, Alman B, Narayanan U, Wright JG.Donaldson S, et al. Among authors: howard a.Spine (Phila Pa 1976). 2007 Jun 15;32(14):1526-32. doi: 10.1097/BRS.0b013e318067dc75.Spine (Phila Pa 1976). 2007.PMID: 17572623
Howard A, Donaldson S, Hedden D, Stephens D, Alman B, Wright J.Howard A, et al.Spine (Phila Pa 1976). 2007 Nov 15;32(24):2715-8. doi: 10.1097/BRS.0b013e31815a51cd.Spine (Phila Pa 1976). 2007.PMID: 18007250Clinical Trial.
Wright JG, Donaldson S, Howard A, Stephens D, Alman B, Hedden D.Wright JG, et al. Among authors: howard a.J Bone Joint Surg Am. 2007 Dec;89(12):2684-93. doi: 10.2106/JBJS.F.00720.J Bone Joint Surg Am. 2007.PMID: 18056501Clinical Trial.