1Department of Rheumatology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
2Department of Geriatrics, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
3Center of Reproductive Medicine, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
4Department of Endocrinology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
5Department of Obstetrics, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
6Department of Obstetrics, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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