Fig 1.
Flowchart.
Table 1.
General characteristics of the sample of study.
Fig 2.
Number of papers by year of publication.
Note: Data for 2016 up to November 8th.
Table 2.
Most productive authors.
Fig 3.
Global collaborative network between countries.
Note: Most productive cluster of countries applying a threshold of 50 or more papers signed in co-authorship. Node sizes are proportional to the number of papers and line thicknesses are proportional to the number of collaborations. Node colors: America = red; Asia = yellow; Africa = green; Europe = blue; Oceania = purple.
Table 3.
Productivity and patterns of collaboration by 50 top countries.
Fig 4.
Word cloud for the frequency of terms.
Note: Most frequently used keywords (at least 500 times).
Fig 5.
Co-words network of the author keywords.
Node sizes are proportional to the number of papers and line thicknesses are proportional to the number of co-occurrences of words. Node colors: blue = words related to general terms; green = words related to diseases/disorders, signs and symptoms; yellow = interventions.
Table 4.
Most prolific journals and most commonly used keywords per journal subject category.
Table 5.
Most cited papers.