For progress to be maintained in a clinical field like sleep medicine, unimpeded, unrestricted access to data and the advances in clinical practice should be available. The reason this book is exciting is that it breaks down the barriers to dissemination of information. Researchers at the forefront of areas that have limited funding can find it difficult to get data from randomised, double-blind, (placebo-controlled), crossover or parallel group studies, etc., and so may be limited to the lowest level of scientific research, . single case, or restricted observational series
