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.
1 If loud noises are particularly bothersome during day hours, try wearing some noise-cancelling headphones. I have a pair of Bose QC 15s, and since they work wonders while flying, I'm hoping they'll also do the trick the next time the neighbors get loud.  Soft Earplugs.