TI - An invitation for rethinking about gamma-glutamyltransferase and its association with coronary collaterals AU - Koza, Y. AU - Demir, P. AU - Aşkın, L. AU - Aksu, U. SO - The Anatolian Journal of Cardiology 2014;14:211-212. DO - 10.5152/akd.2014.5329