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Positive Predictive Value of ICD-9 Codes in the Identification of Cases of Complicated Peptic Ulcer Disease in the Saskatchewan Hospital Automated Database
Raiford, Drusilla S., Gutthann, Susanne Pérez, Garcia Rodriguez, Luis A.Volume:
7
Journal:
Epidemiology
DOI:
10.1097/00001648-199601000-00018
Date:
January, 1996
File:
PDF, 219 KB
1996