Original sentence: There are recent (Jan 2007) long-range epidemiological studies published on health effects of radio and base stations in Schwizerland (Schwarzenburg), France, Spain and, Austria and Egypt
Edited sentence: There are recent (Jan 2007) reliable, well conducted and long-range epidemiological studies published on health effects of radio and base stations in Schwizerland (Schwarzenburg), France, Spain and, Austria and Egypt