Niu, J. ., Zhou, T. ., Niu, L. ., Xie, Z. ., Fang, F. ., Yang, F. ., & Wu, Z. . (2018). Simultaneous pre-concentration and separation on simple paper-based analytical device for protein analysis. Analytical and Bioanalytical Chemistry. https://doi.org/10.1007/s00216-017-0809-5 (Original work published 2018)