1 Nelson Institute of Environmental Medicine , New York University School of Medicine , Tuxedo , New York 10987 , United States.
2 National Heart and Lung Institute , Royal Brompton Hospital, Imperial College London , Chelsea, London , SW3 6NP , U.K.
3 Grantham Institute - Climate Change and the Environment and Dept. of Infectious Disease Epidemiology , Imperial College London , London , W2 1PG , U.K.
4 London School of Hygiene and Tropical Medicine , London , WC1E 7HT , U.K.
5 Princeton University , Princeton , New Jersey 08544 , United States.
6 Department of Philosophy , University of Vermont , Burlington , Vermont 05405 , United States.
7 Indian Statistical Unit , Delhi 78712 , India.
8 Department of Economics , University of Texas at Austin , Austin , Texas 78712 , United States.
9 MRC-PHE Centre for Environment and Health , Imperial College London , London , W2 1PG , U.K.