title: Optimal catheter placement during sonohysterography: a randomized controlled trial comparing cervical to uterine placement.
authors.forename: Roger
authors.initials: R
authors.lastname: Sanders
mesh_terms: D002404:Catheterization / Q000379:methods*; D005260:Female; D006801:Humans; D007047:Hysterosalpingography / Q000379:methods*