Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hendrik van den Bussche and Daniela Koller and Tina Kolonko and Heike Hansen and Karl Wegscheider and Gerd Glaeske and Eike-Christin von Leitner and Ingmar Schäfer and Gerhard Schön,Which chronic diseases and disease combinations are specific to multimorbidity in the elderly? Results of a claims data based cross-sectional study in Germany,BMC Public Health,1471-2458,Springer Science and Business Media LLC,2011-02-14,11,1,101,https://cir.nii.ac.jp/crid/1363951793278435072,https://doi.org/10.1186/1471-2458-11-101