"Amgen (AMGN) opens the secret curtain" (Science & Technology, Mar. 22) incorrectly stated that the company's new drug Sensipar is used to treat a thyroid condition. It is used to treat a parathyroid condition. "The price of efficiency" (Special Report, Mar. 22) quoted Donald J. Listwin, chief executive of Openwave Systems Inc. (OPWV) (not Openware). In a table accompanying "The Vuitton machine" (Marketing, Mar. 22), revenue and profit margin figures shown for Prada were from 2002. Prada's 2003 results are not yet available.
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