“…Fifty-one studies were from the United States (33,34,36,39,43,45,46,49,53,60,61,64,66,67,69,76,88,106,110,112,114,117,122,132,134,136,137,139,140,147,150,151,154,156,158,162,164,170,(172)(173)(174)(175)(181)(182)(183)185,186,189,190,196,210), 13 from Germany (58,…”