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Frederiksen, A.; Abrahamsen, B.; Johansen, P. B.; Sørensen, H. A. . (2017). Danish, national cross-sectional observational study on the prevalence of prior major osteoporotic fractures in adults presenting with hip fracture—limitations and scope for fracture liaison services in prevention of hip fracture. Osteoporosis International, (), –. doi:10.1007/s00198-017-4247-1 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research