1 ( 212 ) 963-6387 ; e-mail steen @ ony.unu.edu ) . ] Briefing on the study by the United Nations World Institute for Development Economics Research ( UN-WIDER ) , entitled `` World distribution of household wealth '' ( organized by the Financing for Development Office , Department of Economic and Social Affairs , in collaboration with the United Nations University Office in New York ) Thursday , 29 March 2007 , from 1.15 to 2.30 p.m. in Conference Room 7 .