[1]Heidelberg Univ, Heidelberg Inst Global Hlth, Fac Med, Univ Hosp, D-69120 Heidelberg, Germany.
[2]Chinese Acad Med Sci & Peking Union Med Coll, Inst Basic Med Sci, State Key Lab Common Mech Res Major Dis, Sch Basic Med, Beijing 100005, Peoples R China.
[3]Chinese Acad Med Sci & Peking Union Med Coll, Beijing 100730, Peoples R China.
[4]Penn State Univ, Harold & Inge Marcus Dept Ind & Mfg Engn, State Coll, PA 16802 USA.
[5]Columbia Univ, Columbia Mailman Sch Publ Hlth, New York, NY 10032 USA.
[6]Stanford Univ, Dept Med, Div Primary Care & Populat Hlth, Palo Alto, CA 94305 USA.
[7]China Japan Friendship Hosp, Ctr Resp Med, Dept Pulm & Crit Care Med, Beijing 100029, Peoples R China.
[8]Chinese Acad Med Sci, Inst Resp Med, Beijing 100029, Peoples R China.
[9]Univ Hong Kong, Fac Business & Econ, Innovat & Informat Management, Hong Kong 999077, Peoples R China.
[10]Univ KwaZulu Natal, Africa Hlth Res Inst, Sch Nursing & Publ Hlth, Wellcome Trust Res, ZA-4041 Durban, South Africa.
[11]Harvard Univ, Harvard TH Chan Sch Publ Hlth, Cambridge, MA 02115 USA.
[12]Natl Clin Res Ctr Resp Dis, Beijing 100029, Peoples R China.
[13]Chinese Acad Engn, Beijing 100088, Peoples R China.