[1] Seattle Childrens Treuman Katz Ctr Pediat Bioeth, Seattle, WA 98105 USA
[2] Univ Washington, Sch Nursing, Seattle, WA 98195 USA
[3] Univ Washington, Dept Hlth Serv, Seattle, WA 98195 USA
[4] Univ Washington, Sch Publ Hlth, Maternal & Child Hlth Training Program, Seattle, WA 98195 USA