[1] Seattle Childrens Res Inst, Treuman Katz Ctr Pediat Bioeth & Palliat Care, Ctr Clin & Translat Res, 1900 Ninth Ave,MS JMB-6, Seattle, WA USA
[2] Univ Wisconsin, Dept Clin Psychol, 2441 Hartford Ave, Milwaukee, WI 53211 USA
[3] Univ Washington, Div Psychiat & Behav Sci, Sch Med, 1959 NE Pacific St, Seattle, WA 98195 USA
[4] Univ Washington, Dept Pediat, Div Bioeth & Palliat Care, Sch Med, M-S MB5 605,POB 5371, Seattle, WA 98105 USA
[5] Geisinger Coll Hlth Sci, Dept Bioeth & Decis Sci, Danville, PA 17044 USA
[6] Univ Washington, Dept Pediat, Div Crit Care, Sch Med, 4800 Sand Point Way NE Box 359300,M-S FA6 226, Seattle, WA 98105 USA