Nelson, J. D., Craig, J. P., Akpek, E. K., Azar, D. T., Belmonte, C., Bron, A. J., … Sullivan, D. A. (2017). TFOS DEWS II Introduction. Ocul Surf, 15(3), 269–275. https://doi.org/10.1016/j.jtos.2017.05.005

Nelson, J Daniel, Jennifer P. Craig, Esen K. Akpek, Dimitri T. Azar, Carlos Belmonte, Anthony J. Bron, Janine A. Clayton, et al. “TFOS DEWS II Introduction.” Ocul Surf 15, no. 3 (July 2017): 269–75. https://doi.org/10.1016/j.jtos.2017.05.005.

Nelson JD, Craig JP, Akpek EK, Azar DT, Belmonte C, Bron AJ, et al. TFOS DEWS II Introduction. Ocul Surf. 2017 Jul;15(3):269–75.

Nelson, J. Daniel, et al. “TFOS DEWS II Introduction.” Ocul Surf, vol. 15, no. 3, July 2017, pp. 269–75. Pubmed, doi:10.1016/j.jtos.2017.05.005.

Nelson JD, Craig JP, Akpek EK, Azar DT, Belmonte C, Bron AJ, Clayton JA, Dogru M, Dua HS, Foulks GN, Gomes JAP, Hammitt KM, Holopainen J, Jones L, Joo C-K, Liu Z, Nichols JJ, Nichols KK, Novack GD, Sangwan V, Stapleton F, Tomlinson A, Tsubota K, Willcox MDP, Wolffsohn JS, Sullivan DA. TFOS DEWS II Introduction. Ocul Surf. 2017 Jul;15(3):269–275.