Affiliation: | 1. Department of Obstetrics, Maternal and Child Health Hospital of Weifang, Weifang, 261011, China 2. Department of Oncology, People’s Hospital of Ganzhou, Ganzhou, 341000, China 3. Department of Endocrinology, The Affiliated Hospital of Medical College, Qingdao University, Qingdao, 266003, China 4. Department of Internal Medicine, Maternal and Child Health Hospital of Weifang, Weifang, 261011, China
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