Six Sigma is an example of a:

In what decade of the twentieth century was trade between China and the U.S. reopened, leading to an exchange of information about traditional medical practices such as acupuncture and Chinese medical massage (tuina)?

A) 1930s B) 1950s C) 1970s D) 1990s

The diaphragm receives help from the ________ muscles during breathing

A) thoracic B) accessory C) pleural D) respiratory