Introduction
The Epidemiology data is the newest addition to the MND Collections, collected between 2010 and 2015. Data are available for 200 patients and 200 controls. The data were collected in the form of two questionnaires: participants first filled in a self-report questionnaire and then had a follow up telephone interview conducted by a research nurse. Unlike the DNA Bank and Cell lines, the controls in the epidemiology study are not spouse controls, they are age, gender and geographically matched controls (recruited from the same GP surgery as the patient).