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.
5 of the Best Noise Cancelling Headphones in the Market Today. 1  Audio-Technica ATH-M30 With a contoured look and a sleek, closed-back design, the ATH-M30 from Japanese professional audio equipment firm Audio-Technica are as easy on the eyes as they are on the ears.