A/RES/53/110 Page 4 17. Requests the Tenth Congress to elaborate a single declaration containing its recommendations on the various substantive items of its agenda with a view to submitting that declaration to the Commission for consideration at its ninth session; 18. Decides that the Commission, at its tenth session, should undertake a review of the role, function, periodicity and duration of the United Nations congresses on the prevention of crime and the treatment of offenders, including the issue of regional preparatory meetings; 19. Requests the Secretary-General to ensure proper follow-up of the present resolution and to report thereon to the General Assembly through the Commission on Crime Prevention and Criminal Justice at its eighth session. 85th plenary meeting 9 December 1998