M. Shormin, S. Shamsuzzaman, M. E. A. Mondol, S. Afroz, and A. Rashed, “Pneumococcal Carriage Recovered from Healthy Children and Their Possible Association with Some Risk Factors in Outpatient Department of a 1000 bedded Tertiary Care Hospital at Dhaka City”, Bangladesh J. Infect. Dis., vol. 6, no. 2, pp. 48–52, Mar. 2020.