[1] Univ Alberta, Dept Pediat, ECHA 4-472,11405-87 Ave, Edmonton, AB T6G 1C9, Canada
[2] Portland VA Res Fdn, Sci Resource Ctr, AHRQ Effect Hlth Care Program, 3710 SW US Vet Hosp Rd, Portland, OR 97239 USA
[3] RAND Corp, Evidence Based Practice Ctr, 1776 Main St, Santa Monica, CA 90407 USA
[4] Univ Alberta, Alberta Res Ctr Hlth Evidence, Edmonton Clin Hlth Acad 4 486D, 11405-87 Ave, Edmonton, AB T6G 1C9, Canada
[5] Univ Penn Hlth Syst, ECRI Penn AHRQ Evidence Based Practice Ctr, 3535 Market St,Suite 50, Philadelphia, PA 19104 USA
[6] Johns Hopkins Univ, Dept Med, Baltimore, MD USA
[7] ECRI Inst, 5200 Butler Pike, Plymouth Meeting, PA 19462 USA
[8] Pacific Northwest Evidence Based Practice Ctr, 3181 SW Sam Jackson Pk Rd, Portland, OR 97239 USA
[9] Kaiser Permanente Northwest, Ctr Hlth Res, Kaiser Permanente Res, Affiliates Evidence Based Practice Ctr, 3800N Interstate Ave, Portland, OR 97227 USA
[10] Patient Ctr Outcomes Res Inst, 1919 M St, Washington, DC 20036 USA
[11] Minneapolis VA Ctr Chron Dis Outcomes Res, Minnesota Evidence Based Practice Ctr, 1 Vet Dr,111-0, Minneapolis, MN 55417 USA
[12] Univ Minnesota, 1 Vet Dr,111-0, Minneapolis, MN 55417 USA
[13] Agency Healthcare Res & Qual, 5600 Fishers Lane, Rockville, MD 20857 USA
[14] Univ Penn, Ctr Evidence Based Practice, 3535 Market St,Suite 50, Philadelphia, PA 19104 USA