Chemotherapy
Chemotherapy included weekly administrations of cisplatin and nab‐paclitaxel on days 1, 8, 15, 22, and 29. 20 mL of 0.9% saline was used to dilute nab‐paclitaxel and then infused 30 min without pre‐medication of corticosteroid or antihistamine. The start dose of nab‐paclitaxel was set at 60 mg/m