?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.chroma.2018.02.032&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=N.A.&rft.au=Manaf%2C+N.A.&rft.aulast=Manaf&rft.title=Journal+of+Chromatography+A&rft.issn=00219673&rft.atitle=Cyclodextrin+based+polymer+sorbents+for+micro-solid+phase+extraction+followed+by+liquid+chromatography+tandem+mass+spectrometry+in+determination+of+endogenous+steroids&rft.volume=1543&rft.date=2018&rft.pages=23-33&rft.genre=article