Wadie I Najm1
, Michael A Seffinger2
, Shiraz I Mishra3
, Vivian M Dickerson4
, Alan Adams5
, Sibylle Reinsch6
, Linda S Murphy7
and Arnold F Goodman8 
1
Department of Family Medicine & Geriatrics, University of California, Irvine, Medical Center, 101 City Drive, Orange, CA 92868, USA
2
Department of Osteopathic Manipulative Medicine, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, 309 E. 2nd St., Pomona, CA 91766-1854, USA
3
Office of the Dean, Western University of Health Sciences College of Osteopathic Medicine of the Pacific, 309 E. 2nd St., Pomona, CA 91766-1854, USA
4
Department of Obstetrics & Gynecology, University of California, Irvine, Medical Center, 101 City Drive, Orange, CA 92868, USA
5
Office for Academic Affairs and Office of the Provost, 212 Westcott Building, Tallahassee, Florida 32306, USA
6
Department of Physical Medicine & Rehabilitation, University of California, Irvine, Medical Center, 101 City Drive, Orange, CA 92868, USA
7
Science Library Reference Department, University of California, Irvine, P.O. Box 19557, Irvine, CA 926233-9557, USA
8
Center for Statistical Consulting, University of California, Irvine, 4900 Berkeley Place, Irvine, CA 92697, USA