A five-layer clinical-AI engineering framework for severity risk stratification from hematological signals: Ensemble learning, uncertainty quantification, and SHAP explainability with application to COVID-19. - Alex Fernandes de Souza; Natália Vilas Boas Pappi Maciel; Filipe Alves Neto Verri; Pedro Paulo Balestrassi (Biomed. Signal Process. Control., 2026)