Anand, A CSingh, B1988-04-012009-06-041988-04-012009-06-041988-04-01Anand AC, Singh B. Cancers of unknown primary site: an enigmatic syndrome. Tropical Gastroenterology. 1988 Apr-Jun; 9(2): 57-67http://imsear.searo.who.int/handle/123456789/12413257 references.engGastrointestinal Neoplasms --pathologyHumansNeoplasm MetastasisNeoplasms, Unknown Primary --diagnosisTumor Markers, BiologicalCancers of unknown primary site: an enigmatic syndrome.Journal Article