1 Organisation mondiale de la Sante pour Afrique, Brazzaville, Democratic Republic of the Congo. Electronic address: moetim@who.int.
2 Chinese Center for Disease Control and Prevention, Beijing, China; Institute of Microbiology, Chinese Academy of Sciences, Beijing, China. Electronic address: gaof@im.ac.cn.
3 World Health Organization Collaborating Centre in Mental Health, Melbourne, VIC, Australia; Centre for Youth Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Orygen, National Centre of Excellence in Youth Mental Health, VIC, Australia. Electronic address: h.herrman@unimelb.edu.au.