Level of patient and operator dose in the largest cardiac centre in Greece - Tsapaki, V; Patsilinakos, S; Voudris, V; Magginas, A; Pavlidis, S; Maounis, T; Theodorakis, G; Koutelou, M; Vrantza, T; Nearchou, M; others (Radiation protection dosimetry, 2008)