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Transforming growth factor-β1 genotype and susceptibility to chronic obstructive pulmonary disease
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    What about other polymorphisms in Transforming growth factor- beta1?
    • Ahmed E Hegab, Pulmonary physician
    • Other Contributors:
      • Tohru Sakamoto, and Kiyohisa Sekizawa

    Dear Editor

    We read with interest the recent article by Wu et al. [1] in which they investigated a single nucleotide polymorphism at exon 1 of the transforming growth factor beta1 (TGF-beta1) gene.

    While we agree with their assumption that TGF-beta1 is a candidate gene for COPD association study, we can not understand why they restricted their study to only one polymorphism in that gene. There a...

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    Conflict of Interest:
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