au.\*:("HAVERKAMP HJ")
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TRANSPAPILLARY POSITIONING OF A LARGE 3.2 MM BILIARY ENDOPROSTHESISHUIBREGTSE K; HAVERKAMP HJ; TYTGAT GN et al.1981; ENDOSCOPY; ISSN 0013-726X; DEU; DA. 1981; VOL. 13; NO 5; PP. 217-219; BIBL. 2 REF.Article
POSITIONING OF A PLASTIC PROSTHESIS UNDER FIBERENDOSCOPIC CONTROL IN THE PALLIATIVE TREATMENT OF CARDIO-ESOPHAGEAL CANCER.TYTGAT GN; DEN HARTOG JAGER FCA; HAVERKAMP HJ et al.1976; ENDOSCOPY; GERM.; DA. 1976; VOL. 8; NO 4; PP. 180-185; ABS. ALLEM.; BIBL. 5 REF.Article
A NEW INSTRUMENT FOR CLEANING AND DISINFECTION OF FIBERENDOSCOPESHUIBREGTSE K; HAVERKAMP HJ; HOOGLAND MN et al.1981; ACTA ENDOSC.; ISSN 0240-642X; FRA; DA. 1981; VOL. 11; NO 4-5; PP. 363-367; BIBL. 6 REF.; IDEM FREArticle