Prevalence of Diarrheagenic E. Coli Among Hospitalized Children in a Clinical Centre
Velev, V., Pavlova, M., Alexandrova, E., Popov, M., Ivanov, I. R.
A Study of Paratyphoid Fever in Bulgarian Children
Pavlova, M., Alexandrova, E., Kalchev, Y., Velev, V., Murdjeva, M., Kantardjiev, T.