CMAJ Open, an online open-access journal, was launched in January 2013. CMAJ Open welcomes high-quality research from all medical and health disciplines. Content is of interest to physicians and other health care professionals, health administrators, policy makers and patients, in Canada and internationally—and is available to readers at no charge. CMAJ Open uses a continuous publishing model in which articles are published when ready, rather than waiting for a specific issue date. Authors are asked to pay a publication fee upon acceptance. That an author can pay does not affect editorial decision-making. CMAJ Open is part of the CMAJ Group and is owned by CMA Impact Inc., a subsidiary of the Canadian Medical Association.