Supplementary Table S2 from Microenvironment-Modulated Metastatic CD133&lt;sup&gt;+&lt;/sup&gt;/CXCR4&lt;sup&gt;+&lt;/sup&gt;/EpCAM&lt;sup&gt;−&lt;/sup&gt; Lung Cancer–Initiating Cells Sustain Tumor Dissemination and Correlate with Poor Prognosis