Optimizing Feature Selection for Unbalanced Metabolomics Data with A Background Factor: A Comparative Study in Parkinson's Disease. - Yinjia Zhang; Wilhelmiina Hämäläinen; Paavo Reinikka; Sanna-Kaisa Herukka; Ville Leinonen; Marko Lehtonen; Sárka Lehtonen (BIBM, 2024)