“…Moreover, with 60% of the sample being from Spain, 30% from Brazil and Portugal, and 10% from other Latin American countries, this study should be considered an approximate view. Following this reasoning, our investigation has faced a series of limitations related to the collection of data on the IF of journals, which have already been referenced, and which could be summarised in the following statements: citation distribution within journals is highly skewed [ 1 , 2 , 12 , 21 , 25 , 26 , 27 , 28 , 29 , 30 ]; the properties of the impact factor are field-specific: it is a composite of multiple, highly diverse article types, including primary research papers and reviews [ 1 , 10 , 12 , 25 , 26 , 27 , 28 , 29 , 30 ]; impact factors can be manipulated (or evaluated) by editorial policy [ 7 , 12 , 25 , 26 , 27 , 28 , 29 , 30 ]; and the data used to calculate the impact factor is neither transparent nor openly available to the public [ 5 , 10 , 11 , 12 , 13 , 16 , 17 , 18 , 19 , 20 , 22 , 23 , 25 , 26 , 27 , 28 ].…”