Graf, J.(2001). Simplified therapeutic intervention scoring system (TISS 28) to assess intensive care unit (ICU) costs and the efficiency of the admission process to a medical ICU. Critical Care, 5(Suppl 1), P223. doi:10.1186/cc1290

Graf, J. "Simplified Therapeutic Intervention Scoring System (TISS 28) to Assess Intensive Care Unit (ICU) Costs and the Efficiency of the Admission Process to a Medical ICU". Critical Care, 5.Suppl 1 ( 2001 ): P223.