Additional file 1: of A snapshot of pneumonia research activity and collaboration patterns (2001–2015): a global bibliometric analysis

Table S1. Descriptors included under the MeSH “Pneumonia” in PubMed. Table S2. Countries by regions according to World Bank Country and Lending Groups. Table S3. Countries by incomes according to World Bank Country and Lending Groups. Table S4. Top 30 countries ranked by total number of publications by quinquennium 2001–2005, 2006–2010 and 2011–2015. Table S5. Top 30 countries and world regions ranked according to according to population index, GDP index, GNI per capita index, R&D expenditure index and Researchers in R&D Index. Table S6. Top 30 countries ranked according to citations, citation rate and h-Index in the period 2001–2015. Table S7. Top 30 journals with the highest numbe…