1 “...A grey literature search included databases with regulatory information, clinical trial registries...”

2 “...A grey literature search included databases with regulatory information, clinical trial registries...”

3 “... antigen test is a common but controversial practice. The prostate cancer antigen-3 gene (PCA3) has...”

4 “... antigen test is a common but controversial practice. The prostate cancer antigen-3 gene (PCA3) has...”

5 “..., as a low yield of relevant articles was expected from the initial search. The literature search for KQ2...”

6 “..., as a low yield of relevant articles was expected from the initial search. The literature search for KQ2...”