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.
Headphones for travel come in many different styles. Some are foldable, making them easy to pack in your bag, and wireless earbuds are especially portable. Noise-canceling or sound-isolating headphones allow you to listen to your music, podcasts and audiobooks without distraction.