ARMS: amplification refractory mutation system; FEV1:
forced expiratory volume in 1st second; HWE: Hardy-Weinberg equilibriu;
NA: relative data were not available; PCR: polymerase chain reaction;
Q-genie tool: Quality of genetic association studies; RFLP: restriction
fragment length polymorphism.
Table 2. Meta-analysis of association among Arg16Gly
polymorphism and salbutamol responsiveness.