The SI derived unit for volume is the cubic meter. 1 cubic meter is equal to 264.172051242 gallon, or 1000 litre. Note that rounding errors may occur, so always check the results.
Snoring is a common problem, caused by a blockage of the nasal passages during sleep. Snoring can be a sign of a serious problem called sleep apnea, where you stop breathing for 10 seconds or more during sleep. There are two types of doctors who treat snoring problems: sleep medicine doctors and otolaryngologists (ear, nose and throat doctors). (AndreyPopov/iStock/Getty Images)
Your doctor may also refer you to an endocrinologist for further tests and treatment. If you need a special exam or treatment, you may see one of these types of doctors: 1  Nuclear medicine physician (a doctor who specializes in medicine using different types of radioactive substances). 2  Surgeon. 3  Otolaryngologist (an ear, nose, and throat specialist).