A novel autoantibody targeting calreticulin is associated with cancer in patients with idiopathic inflammatory myopathies oleh He Chen, Heng Yang, Qiu‐Xiang Cheng, Yong‐Peng Ge, Qing‐Lin Peng, Ya‐Mei Zhang, Gen‐Hong Cheng, Guo‐Chun Wang, Xin Lu