An introduction to articles on evidence based medicine skills published within the issue is presented, including one on causation and harm in the study of health problems, another on the sensitivity and specificity of fine-needle aspiration (FNA) cytology, cell block histopathology and needle core biopsy (NCB) in patients undergoing image guided sampling of abdominal masses, and one on the Hypolipidemic efficacy of Trigonella Foenum seeds with Rosuvastatin and Fenofbrate in hyperlipidemia.