Please remove all accessories, including contact lenses, dentures, hairpins, watches, necklaces, earrings, rings, bracelets, hearing aids, and every metal item. As metal accessories are easy to conduct electricity or scratch patients and use an electric knife to stop bleeding during the operation, all accessories that may carry out electricity should remove before the surgery. Please take movable dentures away because they may block the respiratory tract due to falling off. Please leave your valuables and money to your family members.