1. Division of Respiratory Medicine, Gunma Prefectural Cancer Center, Ota, Gunma 373‑8550, Japan
2. Division of Thoracic Surgery, Gunma Prefectural Cancer Center, Ota, Gunma 373‑8550, Japan
3. Division of Breast Oncology, Gunma Prefectural Cancer Center, Ota, Gunma 373‑8550, Japan
4. Department of Diagnostic Pathology, Dokkyo Medical University, Mibu, Tochigi 321‑0293, Japan
5. Pathology and Clinical Laboratories, Gunma Prefectural Cancer Center, Ota, Gunma 373‑8550, Japan
6. Gunma University Graduate School of Health Science, Maebashi, Gunma 371‑8514, Japan