The logical observation identifier names and codes (LOIN C) 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; Leavelle, D; Leland, D; Piers, T; Charles, L; Griffin, B; Stalling, F; Tullis, A; Hutchins, K; Baenziger, J (Clin Chern, 1996)