1. GRADE guidelines: 3: Rating the quality of evidence;Balshem;J. Clinic. Epidemiol.,2011
2. Occupational exposure to nano-objects and their agglomerates and aggregates across various life cycle stages; a broad-scale exposure study;Bekker;Ann. Occup. Hyg.,2015
3. Harmonization of measurement strategies for exposure to manufactured nano-Objects; report of a workshop;Brouwer;Ann. Occup Hyg.,2012
4. Global nanotechnology development from 1991 to 2012: patents, scientific publications, and effect of NSF funding;Chen;J. Nanopart. Res.,2013
5. Communication from the commission to the european parliament, the council, the european economic and social committee and the committee of regions. a european strategy for key enabling technologies –A bridge to growth and jobs;European Commission;COM,2012