Stanford Graduate School of Business

The STANCO 25 Professor of Finance, Emeritus at Stanford Graduate School of Business

Boston University

Lecturer in Finance at Boston University

Syracuse University

Professor Emeritus, Geography at Syracuse University

Harvard Medical School

Ellen and Melvin Gordon Professor of Medicine at Harvard Medical School

GIBS Business School

Part-time Faculty at University of Pretoria/Visiting Professor at Rotterdam School of Management/Adjunct Faculty at GIBS Business School

GIBS Business School

Owner, Covington Consulting at GIBS Business School

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Adjunct Professor at -

Assistant Professor of Economics and Business

Carroll School of Management

Assistant Professor at Carroll School of Management

Harvard Business School

Jay O. Light Professor of Business Administration at Harvard Business School