[1] RAND Corp, Arlington, VI USA
[2] Ctr Medicare & Medicaid Serv, Baltimore, MD USA
[3] Qualis Hlth1, Seattle, WA USA
[4] Qual Partners Rhode Isl, Providence, RI USA
[5] Rhode Isl Dept Hlth, Providence, RI 02908 USA
[6] Univ Texas, Hlth Sci Ctr, Houston, TX USA
[7] Evangel Lutheran Good Samaritan Soc, Sioux Falls, SD USA