primary studies published RCT The absorption and effect of dietary supplementation with omega-3 fatty acids on serum leukotriene B4 in patients with cystic fibrosis. Year: 1994 Date: 1998 Author: Kurlandsky LE Source Pediatr Pulmonol. 1994 Oct;18(4):211-7. Study design (if review, criteria of inclusion for studies) Single-center, double-blind, placebo controlled, dose ranging study.