1. The Global Spine Care Initiative: a summary of the global burden of low back and neck pain studies;Hurwitz EL,2018
2. US spending on personal health care and public health, 1996-2013;Dieleman JL,2016
3. An assessment of the early management of spine problems and appropriateness of diagnostic imaging utilization;Boden SD,1998
4. Health care spending in the United States and other high-income countries;Papanicolas I,2018
5. A survey of primary care physician practice patterns and adherence to acute low back problem guidelines;Di Iorio D,2000