Columbia subject headings:
Computer terminals--Health aspects.
Electric lines--Health aspects.
Electromagnetic fields--Health aspects.
Harvard subject headings:
Computer terminals--Health aspects.
ELF electromagnetic fields--Health aspects.
Electric lines--Health aspects.
Electromagnetic fields--Health aspects.
Princeton subject headings:
Computer terminals--Health aspects.
ELF electromagnetic fields--Health aspects.
Electric lines--Health aspects.
Electromagnetic fields--Health aspects.