By Happich M.   von Lengerke T.   in Applied Economics Letters

ISSN:1466-4291|14|3|175-178

Routledge Ltd‎(2007)‎

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By Liebl A.   Breitscheidel L.   Nicolay C.   Happich M.   in Current Medical Research and Opinion

ISSN:1473-4877|24|8|2349-2358

Informa Healthcare‎(2008)‎

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By Happich M.   Breitscheidel L.   Meisinger C.   Ulbig M.   Falkenstein P.   Benter U.   Watkins J.   in Current Medical Research and Opinion

ISSN:1473-4877|23|6|1367-1374

Informa Healthcare‎(2007)‎

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