International survey of EUS practice.
Lachter
Jesse
J
D003226:Congresses as Topic; D019160:Endosonography / Q000592:standards / Q000706:statistics & numerical data; D019538:Health Care Surveys / Q000379:methods*; D006801:Humans; D007391:International Cooperation; D015337:Multicenter Studies as Topic; D012189:Retrospective Studies