1. Anderson, R.M., May, R.M.: Infectious Diseases in Humans. Oxford University Press, Oxford (1992)
2. Park, J.Y., Han, M.S., Park, K.U., Kim, J.Y., Choi, E.H.: First pediatric case of coronavirus disease 2019 in Korea. J. Korean Med. Sci. 35(11), 1–7 (2020)
3. Barlow, N.S., Weinstein, S.J.: Accurate closed-form solution of the sir epidemic model. Physica D Nonlinear Phenom. 408, 132540 (2020)
4. West, R.W., Thompson, J.R.: Models for the simple epidemic. Math. Biosci. 141, 29–39 (1997)
5. Nucci, M.C., Leach, P.G.L.: An integrable SIS model. J. Math. Anal. Appl. 290, 506–518 (2004)