Summary of Workshop Discussions, and Future Directions

The last sessions of the workshop were specifically devoted to discussions with all the invited speakers and representatives participating. There were four separate sessions under different headings: design and statistics, outcome measures, exposure assessment, and animal studies. These topics were chosen during the meeting as a result of the interest, and in some cases controversy, that had been apparent in these areas, and they also provided convenient headings under which to discuss future directions. The four sessions were summarized by Professor Yule who acted as rapporteur.