Letter to the Editor
An invitation for rethinking about gamma-glutamyltransferase and its association with coronary collaterals
1Department of Cardiology, Faculty of Medicine, Atatürk University; Erzurum-Turkey
2Department of Cardiology, Faculty of Medicine, Atatürk University, Erzurum-Turkey
2Department of Cardiology, Faculty of Medicine, Atatürk University, Erzurum-Turkey