Vatev, N., Atanasova, M., Stoilova, Y., Chervenyakova, T., Troyancheva, M. Seroprevalence of Hepatitis A a viral infection in Plovdiv, Bulgaria. Plovdiv: 2009 70-73,.
Vatev, N., Atanasova, M., Stoilova, Y., Chervenyakova, T., Troyancheva, M. Seroprevalence of Hepatitis A a viral infection in Plovdiv, Bulgaria. Plovdiv: 2009 70-73,.
Vatev, N., Atanasova, M., Stoilova, Y., Chervenyakova, T., Troyancheva, M. (2009) Seroprevalence of Hepatitis A a viral infection in Plovdiv, Bulgaria, Plovdiv: 70-73,.
Vatev, N., Atanasova, M., Stoilova, Y., Chervenyakova, T., & Troyancheva, M. (2009). Seroprevalence of Hepatitis A a viral infection in Plovdiv, Bulgaria. Plovdiv: 70-73.
Vatev N, Atanasova M, Stoilova Y, Chervenyakova T, Troyancheva M. Seroprevalence of Hepatitis A a viral infection in Plovdiv, Bulgaria. Plovdiv: 2009. p. 70-73.