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Griesinger, G., Blockeel, C., & Tournaye, H. (2018). Oral dydrogesterone for luteal phase support in fresh in vitro fertilization cycles: a new standard? Fertility and Sterility, 109(5), 756–762. doi:10.1016/j.fertnstert.2018.03.034 
10.1016/j.fertnstert.2018.03.034