Comments on Ritter et al.'s report of a comparative trial of LAAM and methadone maintenance...Ritter AJ, Lintzeris N, Clark N, Kutin JJ, Bammer G, Panjari M (2003) A randomized trial comparing levo-alpha acetylmethadol with methadone maintenance for patients in primary care settings in Australia. Addiction. 98. 1605-1613