Application of convex hull analysis for the evaluation of data heterogeneity between patient populations of different origin and implications of hospital bias in downstream machine-learning-based data processing: A comparison of 4 critical-care patient datasets. - Konstantin Sharafutdinov; Jayesh Sudhir Bhat; Sebastian Johannes Fritsch; Kateryna Nikulina; Moein E. Samadi; Richard Polzin; Hannah Mayer; Gernot Marx; Johannes Bickenbach; Andreas Schuppert (Frontiers Big Data, 2022)