Extremely missing numerical data in Electronic Health Records for machine learning can be managed through simple imputation methods considering informative missingness: A comparative of solutions in a COVID-19 mortality case study. - Pablo Ferri Borreda; Nekane Romero-Garcia; Rafael Badenes; David Lora-Pablos; Teresa García Morales; Agustín Gómez De La Camara; Juan M. García-Gómez; Carlos Sáez (Comput. Methods Programs Biomed., 2023)