Effect of Carbogen to Chemoradiation in Volume of Rectal Cancer oleh Christina Hari Nawangsih, Soehartati Gondowihardjo, Sofia Mubarika Haryana, Soeharyo Hadisaputro, Catharina Suharti, Edi Dharmana, Hermina Sukmaningtyas, Fifin Luthfia Rahmi, Ignatius Riwanto