Key term: sociodemographic factor

Original article 2011;37(3):204-212   pdf
Workplace bullying and subsequent sleep problems – the Helsinki Health Study
Lallukka T, Rahkonen O, Lahelma E
 
Supplement 1996;22 suppl 2:1-56   pdf
Magnetic fields and leukemia -- risk for adults living close to power lines
Verkasalo PK