Advantages of linking national registries with twin registries for epidemiological research

by Line C. Gjerde, Fartein Ask Torvik, Kristian Amundsen Østby, Gun Peggy Knudsen, Nikolai Czajkowski, Ted Reichborn-Kjennerud, Ragnhild E. Ørstavik
Published 2016-07-01

Does low alcohol use increase the risk of sickness absence? A discordant twin study

by Kristian Amundsen Østby, Nikolai Czajkowski, Gun Peggy Knudsen, Eivind Ystrøm, Line C. Gjerde, Kenneth S. Kendler, Ragnhild E Ørstavik, Ted Reichborn-Kjennerud
Published 2016-08-01

Musculoskeletal pain and work absence – a 10 year follow-up study of Norwegian young adult twins

by Ragnhild E. Ørstavik, Gun Peggy Knudsen, Kristian Tambs, Line C. Gjerde, Fartein Ask Torvik, Christopher Nielsen, Espen Røysamb, Ted Reichborn-Kjennerud
Published 2016-07-01