[1] Univ Colorado, Adult & Child Ctr Hlth Outcomes Res & Delivery Sci, Sch Med, Aurora, CO USA
[2] Univ Colorado, Sch Med, Dept Pediat, Aurora, CO 80045 USA
[3] Childrens Hosp Colorado, Ctr Canc & Blood Disorders, Aurora, CO USA
[4] Fred Hutchinson Canc Ctr, Clin Res & Publ Hlth Sci Div, Seattle, WA USA
[5] Univ Colorado, Sch Med, Dept Family Med, Aurora, CO USA
[6] Univ Colorado, Sch Med, Dept Internal Med, Aurora, CO USA
[7] Denver Hlth Med Ctr, Denver, CO USA