Urszula Kuzelewska Jaroslaw Stepaniuk Information Granulation: A Medical Case Study. 96-113 2008 9 T. Rough Sets http://dx.doi.org/10.1007/978-3-540-89876-4_6 journals/trs/2008-9 db/journals/trs/trs9.html#KuzelewskaS08