Comment on

• Preliminary results of a randomized, equivalence trial of fluoroscopic caudal epidural injections in managing chronic low back pain: Part 1--Discogenic pain without disc herniation or radiculitis.

  Manchikanti L, Cash KA, McManus CD, Pampati V, Smith HS. Manchikanti L, et al. Pain Physician. 2008 Nov-Dec;11(6):785-800. Pain Physician. 2008. PMID: 19057626 Clinical Trial.
• Preliminary results of a randomized, equivalence trial of fluoroscopic caudal epidural injections in managing chronic low back pain: Part 2--Disc herniation and radiculitis.

  Manchikanti L, Singh V, Cash KA, Pampati V, Damron KS, Boswell MV. Manchikanti L, et al. Pain Physician. 2008 Nov-Dec;11(6):801-15. Pain Physician. 2008. PMID: 19057627 Clinical Trial.
• Preliminary results of a randomized, equivalence trial of fluoroscopic caudal epidural injections in managing chronic low back pain: Part 3--Post surgery syndrome.

  Manchikanti L, Singh V, Cash KA, Pampati V, Datta S. Manchikanti L, et al. Pain Physician. 2008 Nov-Dec;11(6):817-31. Pain Physician. 2008. PMID: 19057628 Clinical Trial.
• Preliminary results of a randomized, equivalence trial of fluoroscopic caudal epidural injections in managing chronic low back pain: Part 4--Spinal stenosis.

  Manchikanti L, Cash KA, McManus CD, Pampati V, Abdi S. Manchikanti L, et al. Pain Physician. 2008 Nov-Dec;11(6):833-48. Pain Physician. 2008. PMID: 19057629 Clinical Trial.