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Lasers in Surgery and Medicine|January 1, 1987
Laser therapy of tumor stenoses in the upper gastrointestinal tract: an international inquiryC Ell, L Demling
Zeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete|October 1, 1991
[The laser in gastroenterology]C Ell, L Demling
Endoscopy|March 1, 1986
Palliative laser treatment of malignant stenoses in the upper gastrointestinal tractC Ell, J F Riemann, G Lux, et al.
Gut|June 1, 1988
Laserlithotripsy of common bile duct stonesC Ell, G Lux, J Hochberger, et al.
Endoscopy|May 1, 1986
Laser-induced shockwave lithotripsy of gallstonesC Ell, F Wondrazek, F Frank, et al.
Deutsche Medizinische Wochenschrift (1946)|February 10, 1995
[20 years of endoscopic papillotomy. Analysis of 2752 patients at Erlangen Hospital]C Ell, T Rabenstein, T Ruppert, et al.
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