Declaration of competing financial interests
From the following article:
Prostate-specific antigen and prostate cancer: prediction, detection and monitoring
Hans Lilja, David Ulmert & Andrew J. Vickers
Nature Reviews Cancer 8, 268-278 (April 2008)
doi:10.1038/nrc2351
Declaration: Dr Hans Lilja is patent holder for free PSA and hK2 blood assays.