Which convention is used in ICD-9 and ICD-10 to set off nonessential or supplementary terms that do not affect the code?

Most children would benefit from a radiographic examination within 12 months following the eruption of the first primary tooth

Indicate whether the statement is true or false

One of the largest clay deposits in the world is located in

A) Calistoga, California. B) Auckland, New Zealand. C) Nova Scotia, Canada. D) Bavaria, Germany.