The non-invasive ventilator delivers oxygen through a non-vented mask tightly fitted to the face, without a need for tracheal intubation or a tube being inserted through the mouth into the windpipe.
Junior Negrao contributed two goals for Ulsan Hyundai, helping the South Korean club see off Beijing Guo'an 2-0 in the quarterfinal on Thursday, reports Xinhua news agency.
