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<http://webisa.webdatacommons.org/44004827>	<http://www.w3.org/ns/prov#value>	"He has authored more than 200 publications and he is particularly proud of the book, Therapeutic Endoscopy: Color Atlas of Operative Techniques, which he coauthored with Nib Soehendra while working in Hamburg.To make a tax-deductible c" .