Comment on

• Unbiased studies are needed before virtual colonoscopy can be dismissed.

  Halligan S, Atkin W. Halligan S, et al. Lancet. 2005 Jan 22-28;365(9456):275-6. doi: 10.1016/S0140-6736(05)17800-3. Lancet. 2005. PMID: 15664205 No abstract available.
• Analysis of air contrast barium enema, computed tomographic colonography, and colonoscopy: prospective comparison.

  Rockey DC, Paulson E, Niedzwiecki D, Davis W, Bosworth HB, Sanders L, Yee J, Henderson J, Hatten P, Burdick S, Sanyal A, Rubin DT, Sterling M, Akerkar G, Bhutani MS, Binmoeller K, Garvie J, Bini EJ, McQuaid K, Foster WL, Thompson WM, Dachman A, Halvorsen R. Rockey DC, et al. Lancet. 2005 Jan 22-28;365(9456):305-11. doi: 10.1016/S0140-6736(05)17784-8. Lancet. 2005. PMID: 15664225