[1] Ctr Dis Control & Prevent, Immunizat Serv Div, Natl Ctr Immunizat & Resp Dis, Atlanta, GA 30333 USA
[2] Baylor Coll Med, Houston, TX 77030 USA
[3] Univ New Mexico, Sch Med, Albuquerque, NM 87131 USA
[4] Oregon Publ Hlth Div, Portland, OR USA
[5] Minnesota Dept Hlth, St Paul, MN USA
[6] Childrens Hosp, Seattle, WA USA
[7] Reg Med Ctr, Seattle, WA USA
[8] Univ Colorado, Hlth Sci Ctr, Denver, CO USA
[9] Massachusetts Dept Publ Hlth, Jamaica Plain, MA USA
[10] Harbor UCLA Med Ctr, Torrance, CA 90509 USA
[11] Tufts Med Ctr, Boston, MA USA
[12] Tufts Med Ctr, Boston, GA USA
[13] Univ Washington, Seattle, WA 98195 USA
[14] Univ Calif San Diego, Sch Med, San Diego, CA USA
[15] Rady Childrens Hosp San Diego, San Diego, CA USA
[16] Texas A&M Hlth Sci Ctr, College Stn, TX USA
[17] Univ Wisconsin, Sch Med & Publ Hlth, Madison, WI USA