1. Professorial Surgical Unit, University of Dublin, Trinity College, Adelaide and Meath Hospitals incorporating the National Children's Hospital, Tallaght, Dublin 24, Ireland
2. Department of Pathology, University of Dublin, Trinity College, Adelaide and Meath Hospitals incorporating the National Children's Hospital, Tallaght, Dublin 24, Ireland
3. Department of Radiology, University of Dublin, Trinity College, Adelaide and Meath Hospitals incorporating the National Children's Hospital, Tallaght, Dublin 24, Ireland