aとbとの関係を解明する: clearly establish a link between aとbとの関連を医学的に究明する: investigate from a medical perspective the relationship between aとbとの関連を医学的に研究する: investigate from a medical perspective the relationship between aとbの潜在的な関連性を解明する: study on potential relationship of A to B aとbとの関連を医学的に調べる: investigate from a medical perspective the relationship between aとbの関連を調べる: look at links between aとbとの逆の関連: inverse association between A and B aとbとの関係を医学的に究明する: investigate from a medical perspective the relationship between aとbとの直接の関連: direct association between A and B 元を解明する: trace the history of〔~の〕 謎を解明する: 1. clear the mystery 2. solve some mysteries ~間の関連を詳しく説明する: spell out the linkages between aとbの関連性を確立する: establish relationship between テロ攻撃との関連を除外する: rule out linkage to the terrorist attack aとbとの関係を強化する: reinforce the relations of A with B