Margaryan, Sose, Markus Wells, Hripsime Apresyan, Tatevik Grigoryan, Kristina Akopyan, Olga Denisiuk, Rony Zachariah, and Karapet Davtyan. “When Will the Coughing Stop? Characteristics of Children With Pertussis (whooping Cough) in Armenia (2014-2018)”. The Journal of Infection in Developing Countries 13, no. 05.1 (May 16, 2019): 057S-062S. Accessed September 16, 2019. https://jidc.org/index.php/journal/article/view/11121.