1YANG Xue, WU Shuicai, BAI Yanping.An ECG wireless Monitoring Instrument Based on GPRS. IEEE/ICME' In-ternational Conference on Complex Medical Engineering, 2007:238-241.
2C.S.Ho, T.K.Chiang, C.H.Lin, et al. Design of Portable ECG Recorder with USB Storage. IEEE Conference on Electron Devices and Solid-State Circuits, 2007: 1095-1098.