'clomifene'/exp OR clomifen*:ab,ti OR clomiphen*:ab,ti OR chloramiphen*:ab,ti OR dyneric:ab,ti OR zuclomiphen*:ab,ti OR zuclomifen*:ab,ti OR enclomiphen*:ab,ti OR gravosan:ab,ti OR klostilbegit:ab,ti OR clostilbegit:ab,ti OR serophen*:ab,ti OR clomid*:ab,ti OR enclomifen*:ab,ti