I don't know what you consider credible, so feel free to do your own Googling. Since it's a widely reported on phenomenon, you'll find plenty of sources to choose from, and you can judge for yourself.
Also, don't keep pasting the phrase "information is subjective" into your comments, it's giving the game away.
Also, don't keep pasting the phrase "information is subjective" into your comments, it's giving the game away.