Public health and health care in Greece and Bulgaria : The challenge of the cross-border collaboration in times of financial crisis; Public health and health care in Greece and Bulgaria : The challenge of the cross-border collaboration in times of financi
Vatev, N., Petrov, A., Dimova, R. Incidence rate and seroprevalence of hepatitis A in Europe (Review),
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Incidence rate and seroprevalence of hepatitis A in Europe (Review). Public health and health care in Greece and Bulgaria : The challenge of the cross-border collaboration in times of financial crisis; Public health and health care in Greece and Bulgaria : The challenge of the cross-border collaboration in times of financi.