highly significantp < 0.001
This difference was statistically highly significant ( p < 0.001), whether patients were analyzed per country of residence or as a whole population (Figs. 2 , 3 , 4 ).
This difference was statistically highly significant ( p < 0.001), whether patients were analyzed per country of residence or as a whole population (Figs. 2 , 3 , 4 ).