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Table 1 Baseline characteristics of the included studies

From: The function of metformin in endometrial receptivity (ER) of patients with polycyclic ovary syndrome (PCOS): a systematic review and meta-analysis

  1. Abbreviation: RCT randomized controlled trial, CS cohort study, CCS case-control study, PS prospective study, MET metformin, CC clomiphene, CPR clinical pregnancy rate, EMT endo metrial thickness, MR miscarriage rate; RI resistance index, Bid bis in die, Tid ter in die