Identifying and managing adverse environmental health effects: 1. Taking an exposure history

From *the Environmental Health Clinic, Sunnybrook & Women's College Health Sciences Centre, Toronto, Ont.; †the Community Medicine Residency Program, Department of Clinical Epidemiology and Biostatistics, and §the Department of Family Medicine, McMaster University, Hamilton, Ont.; and ‡the Department of Family and Community Medicine, University of Toronto, Toronto, Ont.

From *the Environmental Health Clinic, Sunnybrook & Women's College Health Sciences Centre, Toronto, Ont.; †the Community Medicine Residency Program, Department of Clinical Epidemiology and Biostatistics, and §the Department of Family Medicine, McMaster University, Hamilton, Ont.; and ‡the Department of Family and Community Medicine, University of Toronto, Toronto, Ont.

From *the Environmental Health Clinic, Sunnybrook & Women's College Health Sciences Centre, Toronto, Ont.; †the Community Medicine Residency Program, Department of Clinical Epidemiology and Biostatistics, and §the Department of Family Medicine, McMaster University, Hamilton, Ont.; and ‡the Department of Family and Community Medicine, University of Toronto, Toronto, Ont.

From *the Environmental Health Clinic, Sunnybrook & Women's College Health Sciences Centre, Toronto, Ont.; †the Community Medicine Residency Program, Department of Clinical Epidemiology and Biostatistics, and §the Department of Family Medicine, McMaster University, Hamilton, Ont.; and ‡the Department of Family and Community Medicine, University of Toronto, Toronto, Ont.