The attached provisional list of participants attending the twenty-second sessions of the Subsidiary Body for Scientific and Technological Advice and the Subsidiary Body for Implementation, to be held from 19 to 27 May 2005 and 20 to 27 May 2005, respectively, has been prepared on the basis of information received by the secretariat as at Sunday, 15 May 2005. A final list of participants will be issued on Friday, 27 May 2005, taking into account additional information received by the secretariat prior to that date and including any corrections submitted. Corrections should be given to Ms. Heidi Sandoval (Registration counter) by 12 noon, at the latest, on Tuesday, 24 May 2005