title: Thoughts provoked by this issue.
authors.affiliation: Department of Cardiology, İstanbul University, Cerrahpaşa Faculty of Medicine, İstanbul-Turkey. z_ongen@yahoo.com.tr.
authors.forename: Zeki
authors.initials: Z
authors.lastname: Öngen
mesh_terms: D002309:Cardiology; D002986:Clinical Trials as Topic / Q000592:standards*; D006801:Humans; D017410:Practice Guidelines as Topic / Q000592:standards*