“…Among others, Peruzzo Cornetto et al tabulated data for 23 procedures in an Italian hospital, Compagnone et al published data from a different Italian hospital for nine interventional procedures, Dauer et al published P KA data for 43 interventional fluoroscopy procedures at a single U.S. institution, Bundy et al did the same for 12 procedures at a different U.S. medical center, Erskine et al published P KA data for 32 interventional fluoroscopy procedures in Australia, Étard et al’s report contains data from France for 15 procedures, Pitton et al published data for 17 interventional vascular procedures at a German hospital, Schmitz et al reported data on biliary interventions at 23 different facilities, and Ruiz‐Cruces et al reported data for seven interventional procedures performed at eight hospitals in Spain. Many other published studies were also consulted to estimate one or more of P KA , E , and DC E …”