1. New Mexico Poison & Drug Information Center, University of New Mexico, Albuquerque, New Mexico, U.S.A.
2. New Mexico Poison and Drug Information Center, University of New Mexico, HSCL Rm 130, Albuquerque, NM, 87131, U.S.A.
3. New Mexico VA Health Care System, Albuquerque, New Mexico, U.S.A.
4. American Association of Poison Control Centers, Washington, D.C., U.S.A.