G. A. Nielsen

Smoking among upper secondary pupils with asthma: reasons for their smoking behavior: a population-based study.

D. H. Precht, M. Madsen, L. Keiding, 2006, The Journal of adolescent health : official publication of the Society for Adolescent Medicine.

Adolescent health brief Smoking among Upper Secondary Pupils with Asthma: Reasons for Their Smoking Behavior: A Population-based Study

D. H. Precht, M. Madsen, L. Keiding, 2006 .

Smoking cross-culturally: Risk perceptions among young adults in Denmark and the United States

M. Helweg-Larsen, G. A. Nielsen, 2009, Psychology & health.

The association between high blood pressure, physical fitness, and body mass index in adolescents.

L. Andersen, G. A. Nielsen, 2003, Preventive medicine.

The association between leisure time physical activity and smoking in adolescence: An examination of potential mediating and moderating factors

S. Kremers, K. Verkooijen, G. A. Nielsen, 2008, International journal of behavioral medicine.

"I did it my way"--an explorative study of the smoking cessation process among Danish youth.

G. Kok, H. Schaalma, P. Dalum, 2008, Patient education and counseling.

Parental, socio and cultural factors associated with adolescents' sports participation in four Danish municipalities

B. Ibsen, J. Toftegaard-Støckel, G. A. Nielsen, 2011, Scandinavian journal of medicine & science in sports.

Patients Own Safety Incidents Reports to the Danish Patient Safety Database Possess a Unique but Underused Learning Potential in Patient Safety

G. A. Nielsen, Simon Simonsen, Anders Bech Christiansen, 2019, Journal of patient safety.

Youth crowds and cigarette smoking: A prospective study

N. D. de Vries, K. Verkooijen, G. A. Nielsen, 2009 .

Leisure time physical activity motives and smoking in adolescence

S. Kremers, K. Verkooijen, G. A. Nielsen, 2009 .

Youth crowds and substance use: the impact of perceived group norm and multiple group identification.

N. D. de Vries, K. Verkooijen, G. A. Nielsen, 2007, Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors.