Fractional Flow Reserve and Appropriateness of Angioplasty in Moderate Coronary Stenosis - Abbasi, Seyed Hesameddin; Kassaian, Seyed Ebrahim; Salarifar, Mojtaba; Sadeghian, Saeed; Kazemi Saleh, Davood; Mahmoodian, Mehran; Darabian, Sirous; Asaa, Solmaz (The Research in Heart Yield and Translational Medicine (RHYTHM))