“…In relation to the first dimension, health resources , it is usual to employ either some expressions of health expenditure (such as total expenditure [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ], public expenditure [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ] or pharmaceutical expenditure [ 19 , 20 , 21 ]) or some expressions of health resources in physical terms (e.g., the number of doctors and nurses [ 4 , 10 , 22 ] or the number of beds [ 11 , 23 ]).…”