Everyone snores occasionally, but for some, snoring can indicate a more serious issue: sleep disordered breathing. This refers to a range of sleep-related respiratory conditions that include ...

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This story is part of our new series Mask Envy, where we showcase San Franciscans’ creativity and take a look at some of the coolest masks spotted around the city. Have a look you want to submit?

Fun, it’s true, on Halloween. Interesting, true, like the fabulous African mask collection at the Stanley Museum in Iowa City. Not so fun, also true, like the mask that pins you to a table during head ...

Fig. 1. Given (a) the scanned face model of a subject, we develop an optimization-based approach to design (b&c) a PAP mask cushion that fits the face model. (d) The designed mask cushion is ...