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.
Beats Executive headphones are designed for travel, whether youâre cruising at 30,000 feet or just flying across town in a cab. Theyâre lightweight, comfortable to wear, and fold flat for easy packing.