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Spot Sizes used in published phototesting studies
| First author | Spot size |
|---|---|
| Wolska (24) | 2 cm2 sites on the lower back |
| van Weelden (22) | 6 × 8 cm2 on extensor forearms; 5 × 8 cm2 on the trunk |
| Lehmann (20) | 5 × 8 cm2 on the back or extensor surfaces of the arms |
| Hasan (17) | 5 × 8 cm2 to 2 × 2 cm2 on upper back, upper arm or forearm |
| Kuhn (18) | 4 × 5 cm2 on upper back or extensor arms |
| Sanders (21) | 6 × 8 cm2 on the extensor surface of the forearms or trunk |
