Effects of standard and low doses of estradiol on markers of endometrial receptivity in frozen-thawed embryo transfer cycles: Double-blind, randomized clinical trial - Nichamon Parkpinyo; Isarin Thanaboonyawat; Japarath Prechapanich; Pitak Laokirkkiat; Roungsin Choavaratana; Suchanan Hanamornroongruang; Somsin Petyim (PLoS ONE, 2025)