. Michaels AD, Tacy T, Teitel D, Shapiro M, Grossman W. American Journal of Therapeutics. 2009;16:239-246. Jan 13. [Epub
Werner D, Schneider M, Weise M, Nonnast-Daniel B, Daniel WG. American Journal of Cardiology. 1999 Oct 15;84(8):950-952
T, Lawson WE, Hui JCK, Lang G, Liuzzo J, Cohn PF. Angiology. 2001 Oct;52(10):653-658.
. Michaels AD, Accad M, Ports TA, Grossman W. Circulation. 2002 Sep 3;106(10):1237-1242.