2617591 EGCT extragonadal germ cell tumors 27 2617595 EGCT electrocardiogram-gated computed tomography 1 2617589 EGCT Endolumik fluorescence-guided calibration tube 1 2617593 EGCT extended generalized chirp transform 1 2617594 EGCT extragonadal GCT patients 1 2617592 EGCT Extragonadal GCTs 1 2617590 EGCT eye-gaze computer technology 1