The publisher regrets an error in a statement in the above article in Seminars in Respiratory and Critical Care Medicine, volume 23, number 4, p. 403. Column 1, paragraph 1. A sentence states: "Furthermore, urinary excretion of LTE4 was significantly increased in the montelukast group (34.4 to 73.7 pg/mg creatinine; p < 0.05) compared with placebo." It should say: "Furthermore, urinary excretion of LTE4 was significantly increased after exercise (34.4 to 73.7 pg/mg creatinine; p < 0.05)."