The effect of lead free cap on the doses of ionizing radiation to the head of interventional cardiologists working in haemodynamic room. - Grabowicz W; Masiarek K; Górnik T; Grycewicz T; Brodecki M; Dabin J; Huet C; Vanhavere F; Domienik-Andrzejewska JK (International journal of occupational medicine and environmental health, 2022)