**Computer Simulation Model System for Interpretation and Validation of Algorithms for Monitoring of Cancer Patients by Use of Serial Serum Concentrations of Biomarkers in the Follow-Up After Surgical Procedures and Other Treatments – A Computer Simulation Model System Based on the Breast Cancer Biomarker TPA**

Flemming Lund1, György Sölétormos1, Merete Frejstrup Pedersen1 and Per Hyltoft Petersen1,2 *1Department of Clinical Biochemistry, Hillerød Hospital, University of Copenhagen, 2Norwegian Quality Improvement of Primary Care Laboratories (NOKLUS), Section for General Practice, University of Bergen, Bergen, 1Denmark 2Norway* 
