%O This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. %D 2008 %E Christine Oliver %E Jane Dalrymple %P 99-115 %B Developing advocacy for children and youing people: current issues in research, policy and practice %L discovery10002552 %I Jessica Kingsley %C London, UK %A Elaine Chase %T Challenges and complexities of widening access to advocacy services: lessons from an evaluation of Voice advocacy service