[1] Univ Hosp Maastricht, Tissue Typing Lab, Maastricht, Netherlands
[2] Univ Roma Tor Vergata, Dept Internal Med, Rome, Italy
[3] Univ Hosp Maastricht, Dept Resp Med, Maastricht, Netherlands
[4] Univ Hosp Maastricht, Sarcoidosis Management Ctr, Maastricht, Netherlands