This paper is marked retracted in the scholarly record (OpenAlex). Interpret its findings with caution.
Retraction Note: The comparison of two different protocols ultra-long versus medroxyprogesterone acetate in women with ovarian endometriosis: a prospective randomized controlled trial
Haiyan Guo, Tong Du, Hongyuan Gao, Qianwen Xi, Ling Wu, Qifeng Lyu, Qianqian Zhu

Abstract
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
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Taxonomy
TopicsEndometriosis Research and Treatment · Uterine Myomas and Treatments · Endometrial and Cervical Cancer Treatments
**Retraction Note: Reproductive Health (2022) 19:198 ** 10.1186/s12978-022-01500-z
The Editors-in-Chief have retracted this article because it overlaps significantly with another article [1] from the same author group. Haiyan Guo, Hongyuan Gao, Qianwen Xi, Ling Wu, Qifeng Lyu and Qianqiun Zhu have not responded to correspondence from the Publisher about this retraction. Tong Du has stated that they were not aware of the submission of this article and did not participate in this study.
