Johannes-Martin Hahn

COVID-19 in persons aged 70+ in an early affected German district: Risk factors, mortality and post-COVID care needs—A retrospective observational study of hospitalized and non-hospitalized patients

G. Eschweiler, M. Bitzer, N. Malek, 2021, PloS one.

A randomised trial of a geriatric evaluation and management consultation services in frail hospitalised patients.

C. Meisner, T. Kircher, G. Buchkremer, 2006, Age and ageing.