Because in the past researchers did not have access to an adequate sample size, they could not tell the whole story of the interaction of inheritance and environment. Significant statistical correlations can only be achieved if you have a very large database.
陳垣崇指出，過去的研究，囿於樣本數太少，無法提供基因與環境交互影響的完整故事，唯有透過大型的基因資料庫，才能進行有意義的交叉比對，對於本土疾病做大規模的世代研究。