[1] Univ Washington, Psychiat & Behav Sci, Box 356560, Seattle, WA 98195 USA
[2] Univ Washington, Anesthesiol & Pain Med, Seattle, WA 98195 USA
[3] Univ Washington, Sch Nursing, Seattle, WA 98195 USA
[4] Duke Univ, Ctr Addict Sci & Technol, Durham, NC USA
[5] Univ Washington, Dept Biobehav Nursing & Hlth Syst, Seattle, WA 98195 USA
[6] Univ Washington, Dept Informat Sci, Seattle, WA 98195 USA
[7] Univ Washington, Dept Biomed Informat & Med Educ, Seattle, WA 98195 USA
[8] Univ Washington, Div Pain Med Anesthesiol & Pain Med, Seattle, WA 98195 USA
[9] Univ New Mexico, Dept Psychol, Albuquerque, NM 87131 USA