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The following is a schedule of this weekend's "Health Watch Asks, UNMC Answers" segments on KETV NewsWatch 7.

• Friday at 6 p.m. -- "If X-Rays are not harmful, why does everyone leave the room when taking them?" with Tim Durham, D.D.S., UNMC dentist;
• Saturday at 7 a.m. -- "I'm in my 30s and have high cholesterol. Do I have to take medication?" with Toby Free, M.D., UNMC family medicine;
• Sunday at 7 a.m. -- "Do I need lab testing to know if I'm perimenopausal?" with Sonja Kinney, M.D., UNMC OBGYN;
• Sunday at 10 p.m. -- "I notice that I have neck pain after sitting at my computer for several hours. What can I do?" with Grace Johnson, UNMC physical therapist; and
• Monday at 7 a.m. -- "I've heard ovarian cancer is hard to diagnose. Are there any early symptoms?" with Kerry Rodabaugh, M.D., UNMC gynecologic oncologist.