According to Google Scholar, this article has only been cited once. The publication's name is "Documenting Attacks on Health Workers and Facilities in Armed Conflicts." This publication discusses attacks on health facilities and workers in Afghanistan, Central African Republic, South Sudan, Syrian Arab Republic and Yemen.
The article's bibliography contains many references including the WHO, the Red Cross, and other organizations, as well as many other experts and professionals in the field.
The authors range from a variety of institutions including: Stockholm International Peace Research Institute in Sweden, Karolinska Institute in Sweden, Fafo Research Institute in Norway, and King's College London in the UK. The main author, Ludvig Foghammar, seems to have a lot of knowledge in economics, political science, and global health (according to his LinkedIn). He has served as Officer for European Affairs for the Swedish Embassy in Vienna, and a researcher at the Stockholm International Peace Research Institute.