Rapid Surface Enhanced Raman Scattering (SERS) Detection of Sibutramine Hydrochloride in Pharmaceutical Capsules with a β-Cyclodextrin- Ag/Polyvivnyl Alcohol Hydrogel Substrate. - Lei Ouyang; Zuyan Jiang; Nan Wang; Lihua Zhu; Heqing Tang (Sensors, 2017)