1. Downstream Research Group; 920 High Street; Macon; GA; 31201; USA
2. WWF-Pakistan/Pakistan Wetlands Programme; House 451, Street 2, Sector F11/1; Islamabad; Pakistan
3. Sea Mammal Research Unit, Scottish Oceans Institute; University of St. Andrews; St. Andrews; Fife; UK; KY16 8LB
4. United States Geological Survey; Lincoln; NE; USA