1 “.... MEDLINE(r) (January 1, 1998, through July 28, 2009)2....”

2 “... approaches. DATA SOURCES: We searched MEDLINE(r) and Embase(r) from January 2000 to June 2012. We also...”

3 “.... MEDLINE(r) (January 1, 1998, through July 28, 2009)2....”

4 “... approaches. DATA SOURCES: We searched MEDLINE(r) and Embase(r) from January 2000 to June 2012. We also...”

5 “..., embolization, and radiotherapy. DATA SOURCES: We searched MEDLINE(r) and Embase(r) from January 2000 to July...”

6 “..., embolization, and radiotherapy. DATA SOURCES: We searched MEDLINE(r) and Embase(r) from January 2000 to July...”

7 “... SOURCES: A medical librarian searched MEDLINE(r), Embase(r), and the Cochrane Controlled Trials Registry...”

8 “... SOURCES: A medical librarian searched MEDLINE(r), Embase(r), and the Cochrane Controlled Trials Registry...”