00393nam a2200121Ia 4500008004100000022001400041040001100055100001900066245011900085260004100204300001600245300001000261251112s9999||||xx |||||||||||||| ||und||  a0959-8049  aCNCLSA  aHans-Jorg Senn 4aThe European Journal of CancerbThe Official Journal of European Organization for Research and Treatment of Cancer  cJune, 1999bPergamon PressaNew York  aP. 861-1292  bV. 35