TY - JOUR T1 - Searching for evidence: principles and practice JO - Evidence-Based Med UR - http://scholar.google.co.uk/scholar?start=510&q=%22booth+a%22&hl=en&as_sdt=2000#9 PY - 1999/01/01 AU - Booth A AU - O Rourke AF ED - Y2 - 2024/12/22 ER -