Kang G, Hale A D, Richards A F, Jesudason M V, Estes M K, Brown D W
Departments of Microbiology and Gastrointestinal Sciences, Christian Medical College and Hospital, Vellore 632004, India.
Trans R Soc Trop Med Hyg. 2000 Nov-Dec;94(6):681-3. doi: 10.1016/s0035-9203(00)90231-1.