ms. veasley. now with dr. john sarno. as i said, dr. sarno is the author of four books, the first being "mind over back pain" in 1984, the second "healing back pain" in 1991. the third is "mind-body prescription" 1998. and the fourth book is "the divided mind ,"which i have right here, in 2006. so dr. sarno, welcome to our committee. please proceed. >> thank you, senator harkin. thank you for inviting me. pain syndromes can be grouped into two categories. those results from injury. this is the way i see it, from injury, surgery, or associated with severe infection as seen in patients in an acute hospital setting. and those with pain in the back, neck, shoulders, and limbs of a psychophysical origin. the high incidence of the latter group has evolved into a public health problem of great magnitude over the past 40 years. it has been estimated that 80% of the population have a history of one of these painful conditions, which has led to the performance of a great deal of unnecessary surgery and the