[1] Tufts Med Ctr, Div Palliat Care, 800 Washington St, Boston, MA 02111 USA
[2] QualityMetric Inc, Johnston, RI USA
[3] Brigham & Womens Hosp, Ariadne Labs, 75 Francis St, Boston, MA 02115 USA
[4] Harvard TH Chan Sch Publ Hlth, Boston, MA USA
[5] Univ Texas Southwestern Med Ctr Dallas, Dallas, TX 75390 USA
[6] Jigme Dorji Wangchuck Natl Referral Hosp, Thimphu, Bhutan
[7] Childrens Hosp Philadelphia, Philadelphia, PA 19104 USA
[8] Khesar Gyalpo Univ Med Sci Bhutan, Thimphu, Bhutan