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| Study ID | B.L. FEV1 (% pred) | B.L. symp freq |
| Rafferty 1985 | not stated | not stated |
| Stiksa 1985 | not stated | not stated |
| Stiksa 1982a | not stated | not stated |
| Stiksa 1982b | not stated | not stated |
| B.L: baseline |
