Dr. López Nava is one of the best doctors I've ever met. He helped through a life threatening emergency. I was given a beta blocker by a urologist there. Even though I'd told him I could mot take a beta blocker because of other medication i was taking he did not listen. In two days i was so dehydrated as well as other side effects i nearly died. It was part of My Medical Vacations. My entire trip was ruined. I could not have the surgery because of the effects. I had paid $4000 US ahead for the tests and $3000 US for the surgery. Now they will not call me or refund my overpayment. Dr. Lopez Nava told me I'd get better treatment at home. He was very friendly and did a detailed report of my condition. He also explained that the medication caused the emergency. I'm hoping he can help me get all of my test results so i can have the surgery i need as well as a refund of my overpayment from My Medical Vacations. Dr. Lopez if you wouldn't mind calling me I'd appreciate your help. Thank you and the ER doctor for saving my life due to the maltreatment of the Urologist.