Lizza E L Hendriks1, Anne-Marie C Dingemans2. 1. Dept. of Pulmonary Diseases, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center+, PO Box 5800, 6202 AZ, Maastricht, the Netherlands. Electronic address: Lizza.hendriks@mumc.nl. 2. Dept. of Pulmonary Diseases, GROW - School for Oncology and Developmental Biology, Maastricht University Medical Center+, PO Box 5800, 6202 AZ, Maastricht, the Netherlands. Electronic address: a.dingemans@mumc.nl.