Detection of Minimal Residual Disease in Resectable Stage II-IIIB Non-small Cell Lung Cancer

"Sintilimab: 200 mg via intravenous infusion on Day 1 of each 21-day cycle for 2-3 cycles in the neoadjuvant therapy and the maintenance therapy.~Chemotherapy drugs: carboplatin/cisplatin+Pemetrexed/gemcitabine/albuminpaclitaxel.~Carboplatin: AUC 5 via intravenous infusion, administered in 3-week (21 days) cycles for 2-3 cycles before and after surgery respectly.~Cisplatin: 75 mg/m2 via intravenous infusion, administered in 3-week (21 days) cycles for 2-3 cycles before and after surgery respectly.~Pemetrexed: 500mg/m2 via intravenous infusion, administered in 3-week (21 days) cycles for 2-3 cycles before and after surgery respectly.~Gemcitabine:1.0g/m2 via intravenous infusion in day1 and day8, administered in 3-week (21 days) cycles for 2-3 cycles before and after surgery respectly. Albuminpaclitaxel: 260 mg/m2 via intravenous infusion, administered in 3-week (21 days) cycles for 2-3 cycles before and after surgery respectly."