We would like to apologize to Drs. Lerman and Crawford for using five identical sentences from their manuscript. This was unintentional and arose because of a misunderstanding between the Japanese speaking author, Dr. Kihara, who wrote the first draft, and the English speaking author, Dr. Brimacombe, who prepared it for submission unaware of these identical sentences.

* James Cook University, Cairns Base Hospital, Cairns, Australia. jbrimaco@bigpond.net.au