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NGC891
1998: Acoustic trauma in a rock concert (without earplug)
2008: Acoustic trauma in Irish Pub(s) in Dublin (with earplug 29dB)
2014: Acoustic trauma in an office without earplug.
presence of a noisy fan in the room. My ears were too tired because lot off car travel few days before.
2014/11/12: Left ear: hissing 11kHz Right ear: hissing 11kHz + low pulsatile 2,8kHz