Pathologic types of lung cancer in the patients with CPFE.

<p>Pathologic types of lung cancer in the patients with CPFE.</p

Lung cancer stages in patients with CPFE and non-CPFE.

<p>Lung cancer stages in patients with CPFE and non-CPFE.</p

A flow diagram of the study.

<p>A flow diagram of the study.</p

Clinical and pathological results for the comparison groups: lung cancers that developed in a normal lung or a lung with fibrosis or emphysema alone.

<p>Clinical and pathological results for the comparison groups: lung cancers that developed in a normal lung or a lung with fibrosis or emphysema alone.</p

Kaplan–Meier curves for overall survival in lung cancer patients with CPFE versus non-CPRE or normal individuals.

<p>Kaplan–Meier curves for overall survival in lung cancer patients with CPFE versus non-CPRE or normal individuals.</p

Clinical characteristics of the patients with CPFE and lung cancer.

<p>Clinical characteristics of the patients with CPFE and lung cancer.</p

Summed odds ratios for the proportion of squamous cell carcinoma in patients with CPFE compared with that in non-CPFE patients.

<p>Summed odds ratios for the proportion of squamous cell carcinoma in patients with CPFE compared with that in non-CPFE patients.</p

Case-control and cohort studies on CPFE and cancer risk in the meta-analysis.

<p>Case-control and cohort studies on CPFE and cancer risk in the meta-analysis.</p

Twenty-eight day mortality risk of patients with severe pneumonia.

<p>COPD = chronic obstructive pulmonary disease.</p

Microbiological diagnosis of respiratory viruses in hospital-acquired pneumonia.

<p>BAL = bronchoalveolar lavage.</p>a<p>Some cases were associated with two or more pathogens; two viruses were identified in eight patients and three viruses in two patients.</p