%0 Journal Article %T Ultrasonically guided percutaneous and transvaginal fofficle aspiration; a comparative study %A Janssen-Caspers,, H.A.B. %A Wladimiroff,, J.W. %A , van GentI. %A Alberda,, A.Th. %A Leerentveld,, R.A. %A Zeilmaker,, G.H. %A Drogendijk,, A.C. %J Human Reproduction %V 3 %N 3 %P 337-339 %@ 0268-1161 %D 1988-04-01 %I Oxford University Press %~ DeepDyve