1. Missing Sources. The sources of a few examples could not be found despite a strong effort to locate them. Such data that could not be referenced were slightly altered so as not to reflect on any investigator later appearing.
2. RH Riffenburgh. Clinical Investigation Department consulting data, Naval Medical Center San Diego. 2005.
3. A six-month randomized clinical trial comparing the intraocular pressure-lowering efficacy of bimatoprost and latanoprost in patients with ocular hypertension or glaucoma;Noecker;Am. J. Ophthalmol.,2003
4. Riffenburgh, R., Olson, P., Johnstone, P. Association of Schistosomiasis With Cervical Cancer: Detecting Bias in Clinical Studies, 1997.
5. Radial Keratotomy Learning Curve Using the American Technique;Blanton;J. Cataract Refr. Surg.,1998