This book is an introduction of the use of pictures and drawings in the large field of the sleep sciences. This work is a compilation of unprecedented research cases, which are exposed in a clear short and concise manner.It tries to answer many questions to many issues not yet resolved, by using a simple methodology, based on previous knowledge observation, reflexion, deduction and conclusions. It also, brings new facts in somnology, not yet cited, which make of this book, a complementary breviary to what we already know, and participating so, to science progress.
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