@misc{indiciae3c2369c48453, title = {Obstructive sleep apnea: a principal component analysis.}, author = {V Tangugsorn and O Krogstad and L Espeland and T Lyberg}, year = {1999}, url = {https://pubmed.ncbi.nlm.nih.gov/10686846/}, note = {Source identifier: 10686846} }