http://danariely.com/2013/08/11/monday-is-good-for-something-after-all-surgery/

If you're going to have surgery, have it early in the week. People who have surgery on Friday are 44% more likely to die than those who have it on Monday (the rate increases from 1% to 1.44%). Unignorable stats. http://danariely.com/2013/08/11/monday-is-good-for-something-after-all-surgery/