1. Evidence based medicine: what it is and what it isn’t;Sackett DL;BMJ,1996
2. Economic evaluation of health care interventions: an economist’s perspective;Gafni A;ACP J Club,1996
3. Non-random reflection on health services research;Maynard A,1977
4. Evidence-based endocrinology contemporary endocrinology;Gafni A,2006
5. Methods for the economic evaluation of health care programmes;Drummond MF,2015