The Potential Protective Role of Mitochondrial Haplogroup R in Ovarian Response: An Exploratory Study Int J Mol Sci 2025,11:26(6): 2513, doi: 10.3390/ ijms 26062513. Yun Cheng , Cheng-Rung Huang , Yin-Hua Cheng , Yung-Chiao Chang , Pei-Ling Weng , Kuo-Chung Lan