A randomized, controlled study to evaluate the steroid sparing effect of essential fatty acid supplementation in the treatment of canine atopic dermatitis - Saevik, B K; Bergvall, K; Holm, B R; Saijonmaa-Koulumies, L E; Hedhammar, A; Larsen, S; Kristensen, F (Vet Dermatol, 2004)