Table 1.
Results from literature search
| Authors | Year of publication | Country of study |
|---|---|---|
| Prospective studies | ||
| Baroni et al. (25) | 1987 | Italy |
| Oriani et al. (26) | 1990 | Italy |
| Doctor et al. (27) | 1992 | India |
| Faglia et al. 28, 29 | 1996 | Italy |
| Zamboni et al. (30) | 1997 | USA |
| Kalani et al. (31) | 2002 | Sweden |
| Abidia et al. (24) | 2003 | UK |
| Kessler et al. (32) | 2003 | France |
| Duzgun et al. (33) | 2008 | Turkey |
| Löndahl et al. 12, 34, 35 | 2010 | Sweden |
| Retrospective studies | ||
| Cianci & Hunt (36) | 1997 | USA |
| Faglia et al. 28, 29 | 1998 | Italy |
| Zgonis et al. (37) | 2005 | USA |
| Fife et al. (38) | 2007 | USA |
| Oubre et al. (39) | 2007 | USA |
| Ong (40) | 2008 | Singapore |
| Lyon (41) | 2008 | USA |