- Correspondence to Dr Jingna Lin, Department of Endocrinology, Tianjin Union Medical Center, 190 Jieyuan Street, 300191, Tianjin, China; and Dr Lanjie He, Department of Endocrinology, Qilu Hospital of Shandong University (Qingdao), 758 Hefei Road, Shibei District, 266035, Qingdao, China;
- Accepted April 22, 2019
- First published June 9, 2019.
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