[1] Univ Groningen, Univ Med Ctr Groningen, Dept Pulm Med, POB 30 001, NL-9700 RB Groningen, Netherlands
[2] Univ Groningen, Groningen Res Inst Pharm, Dept Mol Pharmacol, POB 196, NL-9700 AD Groningen, Netherlands
[3] Univ Groningen, Univ Med Ctr Groningen, Groningen Res Inst Asthma & COPD GR1AC, POB 30-001, NL-9700 RB Groningen, Netherlands
[4] Univ Groningen, Univ Med Ctr Groningen, Dept Pathol & Med Biol, POB 30-001, NL-9700 RB Groningen, Netherlands