Logical observation identifier names and codes (LOINC) database: a public use set of codes and names for electronic reporting of clinical laboratory test results - Forrey, AW; McDonald, CJ; DeMoor, G; Huff, SM; Leaville, D; Leland, D; Fiers, T; Charles, L; Griffin, B; Stalling, F; Tullis, A; Hutchins, K; Baenziger, J (Clinical Chemistry, 1996)