The Karma system is currently undergoing maintenance (Monday, January 29, 2018).
The maintenance period has been extended to 8PM EST.
Karma Credits will not be available for redeeming during maintenance.
Theme Issue sponsored by London School of Hygiene & Tropical Medicine, London UK (submissions by invitation only). Guest Editors: B Rice, J Hargreaves, S Baral, K Sabin, Paul Mee.