Endosonography Versus Helical Computed Tomography for Locoregional Staging of Gastric CancerMarcin Polkowski, E Butruk, Andrzej Szawłowski et al.|Endoscopy|2004Cited by 111
Helical computed tomographic cholangiography versus endosonography for suspected bile duct stones: a prospective blinded study in non-jaundiced patientsMarcin Polkowski, E Butruk, Jarosław Reguła et al.|Gut|1999Cited by 85
Transabdominal Ultrasound for Visualizing Gastric Submucosal Tumors Diagnosed by Endosonography: Can Surveillance Be Simplified?Marcin Polkowski, E Butruk, Jakub Pałucki|Endoscopy|2002Cited by 30