Um, M., Kim, J., Han, J., Kim, J., Yang, H., Yoon, M., … Cho, S. (2018). Phlorotannin supplement decreases wake after sleep onset in adults with self-reported sleep disturbance: A randomized, controlled, double-blind clinical and polysomnographic study. Phytotherapy Research : PTR. https://doi.org/10.1002/ptr.6019 (Original work published 2018)