1. Sandia National Laboratories, MS 0342, Albuquerque, New Mexico 87185 (M.K.A.); Rio Grande Medical Technologies, 915 Camino de Salud, Box 603, Albuquerque, New Mexico 87131 (J.E.F., J.D.M., M. Ries R.); Department of Chemistry, University of New Mexico, Clark Hall 103, Albuquerque, New Mexico 87131 (T.M.N.); and University of New Mexico School of Medicine, 915 Camino de Salud, Albuquerque, NM 87131 (Mark R.R., R.P.E.)