Response to: 'Size of the shadow'
Valentina Mantegazza, Valentina Volpato, Paola Gripari, Sarah Ghulam Ali, Laura Fusini, Gianpiero Italiano, Manuela Muratori, Gianluca Pontone, Gloria Tamborini, Mauro Pepi
Heart Mar 2021, 107 (6) 510-511; DOI: 10.1136/heartjnl-2020-318919