Gratzer David
Manhattan Institute.
Healthc Pap. 2008;9(1):57-60; discussion 62-67. doi: 10.12927/hcpap.2008.20183.
"They don't understand how this could happen. I tell them that they have crushed their knees under their own weight."
他们不明白这怎么会发生。我告诉他们,是他们自己的体重压垮了膝盖。