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UNITED STATES - MARCH 02: GREY'S ANATOMY - 'Elevator Love Letter' - Tensions are running high at Seattle Grace with all eyes on Derek as he is set to perform his first surgery after his breakdown; attention is also set on Izzie, whose medical condition requires her to undergo a difficult surgery; and Owen has another PTSD episode that injures Cristina and traumatizes both of them, throwing the future of their relationship into question, on 'Grey's Anatomy,' THURSDAY, MARCH 26 (9:00-10:02 p.m., ET) on the ABC Television Network. (Photo by Scott Garfield/ABC via Getty Images)

UNITED STATES - MARCH 02:  GREY'S ANATOMY - 'Elevator Love Letter' - Tensions are running high at Seattle Grace with all eyes on Derek as he is set to perform his first surgery after his breakdown; attention is also set on Izzie, whose medical condition requires her to undergo a difficult surgery; and Owen has another PTSD episode that injures Cristina and traumatizes both of them, throwing the future of their relationship into question, on 'Grey's Anatomy,' THURSDAY, MARCH 26 (9:00-10:02 p.m., ET) on the ABC Television Network.  (Photo by Scott Garfield/ABC via Getty Images)