TY - JOUR T1 - EBM notebook. Searching for evidence: principles and practice JO - Evidence-Based Medicine UR - http://eprints.whiterose.ac.uk/94185/ PY - 1999/09/01 AU - Booth A AU - O Rourke AF ED - DO - DOI: 10.1136/ebm.1999.4.133 PB - BMJ Publishing Group VL - 4 IS - 5 SP - 133 EP - 136 Y2 - 2025/04/13 ER -