Chuang L, Chen N, Lin S, Chang Y, Liao H, Lin Y, Chao I, Lin Y, Pang JS. Increased C-C Chemokine Receptor 2 Gene Expression in Monocytes of Severe Obstructive Sleep Apnea Patients and under Intermittent Hypoxia. PLoS ONE. 2014 Nov 20;9(11):e113304. doi: 10.1371/journal.pone.0113304.