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Wiadomosci Lekarskie (Warsaw, Poland : 1960)|May 1, 1990
[Role of coloscopy in diagnosis and treatment of large bowel diseases]E Butruk, W Bartnik, J Reguła, et al.
Gastrointestinal Endoscopy|December 1, 1986
Short- and long-term results of colonoscopic polypectomy in childrenW Bartnik, E Butruk, J Ryzko, et al.
Polish Medical Sciences and History Bulletin|March 1, 1975
Preliminary results of examination of the large bowel with the colonoscopeW Bartnik, E Butruk, J Kryński
Diseases of the Colon and Rectum|September 1, 1985
A conservative approach to adenomas containing invasive carcinoma removed colonoscopicallyW Bartnik, E Butruk, J Orlowska
Digestion|November 1, 1996
Long-term results of treatment of esophageal achalasia using a Starck dilatorA Gugulski, W Bartnik, E Butruk
Polskie Archiwum Medycyny Wewnetrznej|April 1, 1991
[Endoscopic drainage of the bile ducts]J Reguła, J Pachlewski, W Bartnik, et al.
Hepato-Gastroenterology|October 1, 1991
Metabolism of vitamin A in inflammatory bowel diseaseI Janczewska, W Bartnik, E Butruk, et al.
British Journal of Cancer|February 1, 1987
Serum retinol level in patients with colorectal premalignant and malignant lesionsJ Ostrowski, P Janik, M Nowacki, et al.
Otolaryngologia Polska = the Polish Otolaryngology|January 1, 1990
[Hearing results of cholesteatoma middle ear surgery using open and closed techniques]W Bartnik
Otolaryngologia Polska = the Polish Otolaryngology|January 1, 1989
[A case of advanced skin cancer of the nose]W Bartnik
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