"I realized I was clenching my teeth hard," "My jaw feels dull when I wake up in the morning," "I went to the hospital because of persistent headaches, but the cause was unclear"—the number of people ...

Institute of Human Genetics, University of Newcastle upon Tyne, Newcastle upon Tyne, UK Correspondence to: Dr Anne Lampe Institute of Human Genetics, University of Newcastle upon Tyne, International ...

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