The dr. here in Usa told me after heopen me up. was an old band plus was in a wrong place.he even called my dr. in Tijuana . The dr. in tijuana talked with me on the phone the same time he was doing a surgery, because I heard a bip and he said: i will call you soon's I finish with this surgery, OH MY GOSH!!!!!!!!!!!!!!!!!!!!!!!1 i almost die.