Table 8
Trends in clipping and coiling in two institutions
Clip
Coil
1999
2
0
2000
8
1
2001
2
0
2002
2
0
2003
3
1
2004
4
3
2005
6
3
2006
4
7
2007
11
4
2008
7
4
2009
5
9