00305nam a2200109Ia 4500008004100000040001100041100002000052245004100072260005800113300001500171300000900186251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aMicheal Shimkin 0aJournal Of National Cancer Institute  c1961bUS Department Of Health And Human ServicesaUSA  aP.937-1530  bV.27