参考文献:
RESPIVERT LIMITED ITO, Kazuhiro STRONG, Peter RAPEPORT, William, Garth MURRAY, Peter, John KING-UNDERWOOD, John WILLIAMS, Jonathan Gareth ONIONS, Stuart, Thomas JOLY, Kevin CHARRON, Catherine, Elisabeth Patent: WO200/670 A, 200 Location in patent: Page/Page column 55 WO 200/0670 A