COPD Hospitalization Risk Increased with Distinct Patterns of Multiple Systems Comorbidities Unveiled by Network Modeling. - Young Ji Lee; Andrew D. Boyd; Jianrong Li; Vincent Gardeux; Colleen Kenost; Donald Saner; Haiquan Li; Ivo L. Abraham; Jerry A. Krishnan; Yves A. Lussier (AMIA, 2014)