By Ronellenfitsch Ulrich   Kyobutungi Catherine   Becher Heiko   Razum Oliver   in European Journal of Epidemiology

ISSN:0393-2990|19|12|1073-1074

Springer Publishing Company ‎(2004)‎

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By Tao Sha   Seiler Christoph M.   Ronellenfitsch Ulrich   Brenner Hermann   in Acta Oncologica

ISSN:0284-186X|52|8|1667-1675

Informa Healthcare‎(2013)‎

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