Study typea | No. of articles | References |
---|---|---|
Laboratory only | 3 | |
Laboratory + semi-field | 3 | |
Laboratory + field | 1 | [26] |
Laboratory + semi-field + field | 3 | |
Semi-field only | 3 | |
Semi-field + field | 3 | |
Field only | 32 | [10, 18, 19, 22,23,24,25, 27, 30, 32, 48,49,50,51, 60, 61, 76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91] |
Non-interventional | 8 | |
Total | 56 | Â |