Bahadur et al, unpublished Unexplained subfertility trial • RCT – treatment naive couples 3 cycles IUI + COH versus 1 cycle IVF/ICSI • 207 couples recruited Nandi et al, Fertil Steril 107,1329,2017 122 PRECONGRESS COURSE 09 I VIENNA, AUSTRIA – 23 JUNE 2019 125