1. Department of Pharmacology; Hangzhou City 310058 China
2. The Key Respiratory Drug Research Laboratory of China Food and Drug Administration; School of Medicine, Zhejiang University; Hangzhou City 310058 China
3. Faculty of Pharmacy, Bahauddin Zakariya University; Multan Pakistan
4. Department of Respiratory Medicine; the Affiliated Children Hospital, School of Medicine, Zhejiang University; Hangzhou City 310006 China