The Burden of Access in Duchenne Muscular Dystrophy in the US

Inclusion Criteria: Patient/Parent interviews * Patients residing in the US who have been diagnosed with DMD who are age 18 years or older, or the parent / legal guardian of a person of any age who has been diagnosed with DMD, * Have provide "Proof of DMD" to ensure that they are impacted by the disease, * Who have provided sufficient information in the RSVP process to determine their functional status; ambulatory, transitional or non-ambulatory, * State that they are the person who deals with insurance issues for the affected patient and, * Who are able to understand and consent to participation in the study Healthcare Provider survey * Healthcare providers (physicians, nurse practitioners, and physician assistants) currently involved in the care of patients with DMD * Are currently practicing in the US, * Who have provided sufficient information in the survey screening to determine that they currently care for DMD patients, * State that they and/or persons on their staff interface with insurance companies for DMD patients related to access to medications, services and/or medical equipment and, * Who are able to understand and consent to participation in the study Exclusion Criteria: * There are no stated exclusion criteria in this study. Study population must meet all inclusion criteria in order to be deemed eligible to participate.