[1] Univ Iowa, Coll Publ Hlth, Dept Epidemiol, Ctr Emerging Infect Dis, Iowa City, IA 52242 USA
[2] Univ Iowa, Coll Publ Hlth, Dept Biostat, Iowa City, IA 52242 USA
[3] Calif Dept Hlth Serv, Richmond, CA USA
[4] Naval Hlth Res Ctr, Navy Resp Dis Lab, San Diego, CA USA
[5] Lovelace Resp Res Inst, Albuquerque, NM USA
[6] Yale New Haven Med Ctr, Dept Lab Med, Clin Virol Lab, New Haven, CT 06504 USA
[7] Yale Univ, New Haven, CT USA
[8] Indiana Univ, Sch Med, Indianapolis, IN 46204 USA
[9] Clarian Hlth Partners, Indianapolis, IN USA
[10] St Louis Childrens Hosp, St Louis, MO 63178 USA
[11] Childrens Mercy Hosp, Dept Pathol & Lab Med, Kansas City, MO 64108 USA
[12] N Shore Univ Hosp, Manhasset, NY USA
[13] N Shore Long Isl Jewish Hlth Syst Labs, Manhasset, NY USA
[14] SUNY Upstate Med Univ, Dept Clin Pathol, Syracuse, NY USA
[15] Childrens Hosp, Dept Pathol, Denver, CO 80218 USA
[16] Baylor Coll Med, Dept Pediat, Houston, TX 77030 USA
[17] Texas Childrens Hosp, Diagnost Virol Lab, Houston, TX 77030 USA
[18] Lab Sci Arizona Sonora Quest Labs, Tempe, AZ USA
[19] Med Coll Wisconsin, Dept Pathol, Milwaukee, WI 53226 USA
[20] Univ N Carolina, Dept Pathol & Lab Med, Chapel Hill, NC USA
[21] Vanderbilt Univ, Sch Med, Dept Pathol, Nashville, TN 37212 USA
[22] Vanderbilt Univ, Sch Med, Dept Pediat, Nashville, TN 37212 USA
[23] Univ Washington, Dept Pediat, Seattle, WA 98195 USA
[24] Childrens Hosp & Med Ctr, Seattle, WA 98105 USA
[25] Baptist Med Ctr, Infect Dis Labs, Jacksonville, FL USA
[26] Ctr Dis Control & Prevent, Atlanta, GA USA