Martin J Donnelly1
, PJ McCall1
, Christian Lengeler2
, Imelda Bates1
, Umberto D'Alessandro3
, Guy Barnish1
, Flemming Konradsen4,5
, Eveline Klinkenberg1,6
, Harold Townson1
, Jean-Francois Trape7
, Ian M Hastings1
and Clifford Mutero8 
1
Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, L3 5QA. UK
2
Swiss Tropical Institute, P.O. Box, 4002 Basel, Switzerland
3
Prince Leopold Institute of Tropical Medicine, Nationalestraat 155, B-2000 Antwerp, Belgium
4
International Water Management Institute Sri Lanka127, Sunil Mawatha, Pelawatte, Battaramulla, Sri Lanka
5
Institute of Public Health, Department of International Health, University of Copenhagen, Blegdamsvej 32200 København, Denmark
6
International Water Management Institute (West Africa), PMB CT 112, Cantonments, Accra, Ghana
7
Institut de Recherche pour le Développement, BP 1386, CP 18524, Dakar, Sénégal
8
Systemwide Initiative on Malaria and Agriculture, International Water Management Institute, Private Bag X813, Silverton 0127, South Africa