A cure for bipolar, depression, schizophrenia or other mental illness would be a state of recovery where no more symptoms were present and you were returned to health permanently. This is the one that is contentious in mental illness.
Typical king-size beds measure 78 inches wide, while queen mattresses are 60 inches, full beds are 54 inches and twin beds are 39 inches wide. Visit a lumber or home improvement store and request the wood to be cut the exact length to save you some time and trouble.
edit Standard Dimensions. A king size bed is wider than a queen bed. While a queen size bed is 60 inches (152 cm) wide, a king size bed is 76 inches (193 cm) wide. Both bed sizes are 80 inches (203 cm) long.