TY - RPRT TI - The hepatitis knowledge base. A prototype information transfer system. AU - L M Bernstein AU - E R Siegel AU - C M Goldstein PY - 1980 DO - 10.7326/0003-4819-93-1-169 UR - https://pubmed.ncbi.nlm.nih.gov/7416656/ ID - 7416656 ER -