Lothman KA, Mangel AW. Pulse Synchronized Contractions (PSCs) - Editorial. J Cardiol Cardiovasc Med. 2019 Nov 15;4:199-200. doi: 10.29328/journal.jccm.1001067
Kim D, Lauria DT, Poulos C, Dong B, Whittington D. Effect of travel distance on household demand for typhoid vaccines: implications for planning. Int J Health Plann Manage. 2013 Mar 12;Advance Online.