We are pleased to announce that, thanks to the financial support of our valuable
users, we are able once again, to import articles from the radio frequency range into
the EMF-Portal. Fortunately, we could close the gap in our literature inventory and
all newly published articles released up to April 30, 2018 have been included. In
order that we are able to import further publications released in the future, please
help us with your donation. Thank you very much!
Epidemiology. A method for collecting data using a set of questions on clinical data, anamnesis, social status, education, occupational group, etc. The questions may be self-administered or interviewer-administered.