Authors
Stanev Kamen
Department of Cardiovascular Surgery, “St. George” University Hospital, Plovdiv, Bulgaria
Dobreva-Yatseva Bistra
Department of Cardiology, “St. George” University Hospital, Plovdiv, Bulgaria
Gonovski Todor
Department of Cardiovascular Surgery, “St. George” University Hospital, Plovdiv, Bulgaria
Ivanov Asen
Department of Cardiovascular Surgery, “St. George” University Hospital, Plovdiv, Bulgaria
Nachev Gencho
Department of Cardiovascular Surgery, “St. George” University Hospital, Plovdiv, Bulgaria