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Effect of desvenlafaxine on the cytochrome P450 2D6 enzyme system.
Preskorn SH, Nichols AI, Paul J, Patroneva AL, Helzner EC, Guico-Pabia CJ. Preskorn SH, et al. Among authors: helzner ec. J Psychiatr Pract. 2008 Nov;14(6):368-78. doi: 10.1097/01.pra.0000341891.43501.6b. J Psychiatr Pract. 2008. PMID: 19057238 Review.
Failure of zinc gluconate in treatment of acute upper respiratory tract infections.
Smith DS, Helzner EC, Nuttall CE Jr, Collins M, Rofman BA, Ginsberg D, Goswick CB, Magner A. Smith DS, et al. Among authors: helzner ec. Antimicrob Agents Chemother. 1989 May;33(5):646-8. doi: 10.1128/AAC.33.5.646. Antimicrob Agents Chemother. 1989. PMID: 2665639 Free PMC article. Clinical Trial.