Chunk #22 — Authors' contributions

Source

Allelic and genotypic associations of DRD2 TaqI A polymorphism with heroin dependence in Spanish subjects: a case control study.

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JP made substantial contributions to the conception and design of the study, the interpretation of data, and drafting of the manuscript. MB made substantial contributions to the conception and design of the study, oversaw genotyping, and helped to draft the manuscript.