TY - JOUR AU - Hersh, W TI - A stimulus to define informatics and health information technology JO - BMC Med Inform Decis Mak IS - 01 VL - 9 PY - 2009 DO - 10.1186/1472-6947-9-24 L3 - PubMed-ID: 19445665 SP - 24 ER -