Correlation between Certain Klotho Gene Polymorphisms and IGF-1 Levels of Colorectal Cancer Patients in Northern Iran Journal title: Middle East Journal of Cancer Authors: Mojtaba Fathi, Omid Goodarzvand, Monireh Aghjany-Nasab, Fariborz Mansour-Ghanaei, Aboalfazl Nazarian Subject(s):