1. Some characteristics of multiple primary cancers;Mersheimer;Ann NY Acad Sci,1964
2. Cancer often strikes twice;Pickren;NY State J Med,1963
3. Multiple primary malignant tumors;Kirshbaum;J Lab Clin Med,1938
4. Multiple primary cancers;Burke;Am J Cancer,1936
5. Multiple primary malignant tumors: a survey of the literature and statistical study;Warren;Am J Cancer,1932