From: Nanoparticle exposure at nanotechnology workplaces: A review
With/without activity
With/without nanomaterial
Time series analysis
[36–41]
[42] 2,3
Time series and, or only spatial analysis
[2]2, [3]2, [33]2,3, [36]1, [38]1, [43–52]2, [53]2,3, [54]2,3, [55]2,3