Collaborative effort led by Greg Zaric at the University of Western Ontario:
Identification and survival outcomes of a cohort of patients with cancer of unknown primary in Ontario, Canada. Kim CS1, Hannouf MB, Sarma S, Rodrigues GB, Rogan PK, Mahmud SM, Winquist E, Brackstone M, Zaric GS. Acta Oncol. 2015 Mar 31:1-7. (link)