Myers, Sharon L
Yang, Chun Z
Bittner, George D
Witt, Kristine L
Tice, Raymond R
Baird, Donna D
Article History
Received: 9 January 2014
Revised: 26 March 2014
Accepted: 27 March 2014
First Online: 21 May 2014
Competing interests
: C.Z.Y. is employed by and owns stock in CertiChem (CCi). GDB owns stock in and is a consultant CEO of CCi. All authors had freedom to design, conduct, interpret, and publish research uncompromised by any controlling sponsor All other authors declare no conflict of interest.