somyms 0 Newbie Poster

while mining medical data set privacy is a major concern.i want to mine medical data and preserve privacy.so i need to mine medical data and group them according to diseases so that it can be used for research and publishing without revealing patients information .i planned to use lkc privacy for protecting the personal information.so for grouping the data which techniques i use?classification algorithm/association /clustering??? which algorithm matches?which tool i need to use