A 2009 study conducted by the Institute for Good Medicine found that 17 percent of adults over the age of 21 were either injured at least once or know of someone who was injured while opening a holiday or birthday gift.
2009年由美国医学研究所进行的一项研究发现，17%的21岁以上成年人至少受伤一次或知道有人在打开节日或生日礼物时受伤。