Algorithm 2 Pseudoalgorithm of the feature selection

Input: Clinical data

1. All features were normalized as described in the Pre-processing Section 2. For each feature j, Set $V_j=0$ End for each $3$. For each FS technique $i$ For each feature j If feature $j$ is in $FS{S}_i$, $$V_j=V_j+1$$ End if                    End for each End for each 4. Rank features to descending order with respect to $V_j$. In case of equality the ranking is shaped from the feature importance of the best performing FS technique. End