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Jiu-Jenq Lin; Ying-Tai Wu; Shwu-Fen Wang; Shiau-Yee Chen. (2005). Trapezius muscle imbalance in individuals suffering from frozen shoulder syndrome. , 24(6), 569–575. doi:10.1007/s10067-005-1105-x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research