Robbins, J RWang, XTousignant, RAref, ISiddiqui, F2016-02-122016-02-122014-10Robbins J R, Wang X, Tousignant R, Aref I, Siddiqui F. Patient with multiple metachronous primary cancers. Indian Journal of Cancer. 2014 Oct-Dec; 51(4): 480.0019-509Xhttp://imsear.searo.who.int/handle/123456789/172626enArticle