Aubert, C. E.; Fankhauser, N.; Marques-Vidal, P.; Stirnemann, J.; Aujesky, D.; Limacher, A.; Donzé, J. Patterns of Multimorbidity in Internal Medicine Patients in Swiss University Hospitals: A Multicentre Cohort Study. Swiss Med Wkly 2019, 149, w20094.