[1] MIT, Inst Data Syst & Soc, Cambridge, MA USA
[2] Boston Childrens Hosp, Computat Hlth Informat Program, Boston, MA USA
[3] Massachusetts Dept Publ Hlth, Bur Infect Dis & Lab Sci, Boston, MA USA
[4] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA USA
[5] MIT, Hist Anthropol Sci Technol & Soc, Cambridge, MA USA
[6] Boston Univ, Sch Publ Hlth, Dept Epidemiol, Boston, MA USA
[7] Harvard Med Sch, Dept Pediat, Boston, MA USA
[8] Inst Data Syst & Soc, 50 Ames St, Cambridge, MA 02142 USA