Per Ivar Gaarder

High anti-cyclic citrullinated peptide levels and an algorithm of four variables predict radiographic progression in patients with rheumatoid arthritis: results from a 10-year longitudinal study

Silje Watterdal Syversen, Per Ivar Gaarder, Guro Løvik Goll et al. · Annals of the Rheumatic Diseases · 2007 · 311 citations

Exposure to pets and atopy‐related diseases in the first 4 years of life

Per Nafstad, Per Magnus, Per Ivar Gaarder et al. · Allergy · 2001 · 215 citations

Diesel exhaust particles and carbon black have adjuvant activity on the local lymph node response and systemic IgE production to ovalbumin

Martinus Løvik, Ann-Kristin Høgseth, Per Ivar Gaarder et al. · Toxicology · 1997 · 161 citations

Inflammation, Allergy, Pathogenesis +10

Prediction of radiographic progression in rheumatoid arthritis and the role of antibodies against mutated citrullinated vimentin: results from a 10-year prospective study

Silje Watterdal Syversen, Guro Løvik Goll, Désirée van der Heijde et al. · Annals of the Rheumatic Diseases · 2009 · 136 citations

Residential Dampness Problems and Symptoms and Signs of Bronchial Obstruction in Young Norwegian Children

Per Nafstad, Leif Øie, R Mehl et al. · American Journal of Respiratory and Critical Care Medicine · 1998 · 110 citations

Asthma, Environmental Allergy, Air Quality +20