PT - JOURNAL ARTICLE AU - Clancy, M J TI - Overview of research designs AID - 10.1136/emj.19.6.546 DP - 2002 Nov 01 TA - Emergency Medicine Journal PG - 546--549 VI - 19 IP - 6 4099 - http://emj.bmj.com/content/19/6/546.short 4100 - http://emj.bmj.com/content/19/6/546.full SO - Emerg Med J2002 Nov 01; 19 AB - The fourth paper in the research series looks at the difficulties in establishing truth for the researcher and provides an overview of research design.