Part,  Chapter, Paragraph
1   II,     5.  5.  3|    Neurosurg Psychiatry 58:570-576.~Commission on Classification
2   II,     5.  5.  3|    Neurosurg Psychiatry 75:572-576.~Middleton LT, Dean G (1991):
3  III,    10.  5.  2| observational study. BMJ, 317: 576-8.~ ~Van Bergen JEAM et