1 | Dulai, et al
18
| Retrospective | 2005 | 15784018 | USA | Southern California Veterans Affairs healthcare system (VISN 22) | 650 |
2 | Vogt, et al
19
| Prospective | 2008 | 19997751 | Switzerland | Single centre | 93 |
3 | Younes, et al
20
| Prospective | 2010 | 21466357 | USA | Population-based study | 276 |
4 | Ajumobi, et al
21
| Retrospective | 2010 | 19669878 | USA | VAMC Loma Linda, CA | 165 |
5 | Bhat (including only BE+SIM), et al
22
| Retrospective | 2011 | 21680910 | UK | Northern Ireland BE registry | 1990 |
6 | Rugge, et al
23
| Prospective | 2013 | 23095623 | Italy | Data from 13 centres (EBRA) | 858 |
7 | Magno, et al
24
| Retrospective | 2014 | 25563036 | Puerto Rico | Data from three labs from Puerto Rico | 1232 |
8 | Picardo, et al
25
| Retrospective | 2015 | 24428806 | Ireland | Single centre registry | 1093 |
9 | Visrodia, et al
7
| Prospective | 2016 | 25956705 | USA | Population based—Olmsted County, MN | 488 |
10 | Valdovinos-Andraca, et al
26
| Retrospective | 2018 | 28551084 | Mexico | single centre | 420 |
11 | Desai, et al
27
| Retrospective | 2018 | 30342028 | USA data only | BEST registry (multicentre) | 3643 |