Angiogenin and osteopontin levels are associated with better developed coronary collateral circulation in patients with stable coronary artery disease. (August 2018) - Gurses, K.M.; Kocyigit, D.; Yalcin, M.U.; Besler, M.S.; Canpinar, H.; Yorgun, H.; Kaya, E.B.; OZER, N.; Guc, D.; Aytemir, K.; Tokgozoglu, L.