Shaikh Mehdi Hasan (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Shahed Hossain (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Razib Mamun (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Dipika Shankar Bhattacharyya (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Rushdia Ahmed (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Fayeza Sultana (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Rukhsana Gazi (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B)), Alayne Adams (International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B))