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Cawsey, S.; Padwal, R.; Sharma, A. M.; Wang, X.; Li, S.; Siminoski, K. . (2015). Women with severe obesity and relatively low bone mineral density have increased fracture risk. Osteoporosis International, 26(1), 103–111. doi:10.1007/s00198-014-2833-z 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research