Sensitivity and performance characteristics of a direct PCR with stool samples in comparison to conventional techniques for diagnosis of Shigella and enteroinvasive Escherichia coli infection in children with acute diarrhoea in Calcutta, IndiaShanta Dutta, Swatilekha Bhattacharya, Kartick C. Pramanik et al.|Journal of Medical Microbiology|2001Cited by 98