Part,  Chapter, Paragraph

1   II,     5.  5.  2| needs to be carried out to investigate other possible factors which
2   II,     5.  7.  3|   International studies to investigate the reasons for different
3   II,     5.  9.  5| More studies are needed to investigate which factors influence
4   II,     9.  3.  3|  needs to be undertaken to investigate the audience perspective
5  III,    10.  1.  1| addition, only few studies investigate the two risk factors simultaneously (
6   IV,    11.  5.  4|  ane be able to detect and investigate serious or unexpected adverse