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Patterns of primary care and mortality among patients with schizophrenia or diabetes: a cluster analysis approach to the retrospective study of healthcare utilization

Laurel A Copeland*, John E Zeber, Chen-Pin Wang, Michael L Parchman, Valerie A Lawrence, Marcia Valenstein and Alexander L Miller

BMC Health Services Research 2009, 9:127  doi:10.1186/1472-6963-9-127