Due to this high prevalence, vertebral artery hypoplasia (VAH) has not yet been considered an independent risk factor for ischemic stroke [1,2].
How to use your own headphones on Americanâs new 777-300ER. Passengers traveling in First and Business Class on Americanâs new 777-300ER are provided with Bose QuietComfort 15 Acoustic Noise Canceling headphones to use during the flight.
Bose Noise Canceling Headphones. Extremely expensive but amazing sounding. These have a switch on them that filters out any outside noise so you feel alone with your music. These are the best headphones if you need to work in noisy environments, or hate plane noise. Itâs all gone with a flick of a switch.