Author Response to Issues for Studies on E-cigarettes and Chronic Obstructive Pulmonary Disorder

Affiliations

• ¹ Department of Epidemiology, University of Michigan, Ann Arbor, MI. Electronic address: [email protected].
• ² Department of Epidemiology, University of Michigan, Ann Arbor, MI.
• ³ Division of Pulmonary and Critical Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor.
• ⁴ Department of Epidemiology, University of Michigan, Ann Arbor, MI; Department of Integrative Oncology, BC Cancer Research Institute, Vancouver, British Columbia, Canada.