"country","institutions","researchers","collaborations"
"United Kingdom","63","1454","3807"
"Peoples Republic of China","25","88","127"
"Spain","18","31","31"
"United States of America","17","50","86"
"Italy","15","61","108"
"Germany","14","79","103"
"France","11","31","41"
"India","10","31","53"
"The Netherlands","8","23","28"
"Belgium","6","15","17"
"Australia","5","9","15"
"Switzerland","5","26","33"
"Brazil","4","9","9"
"Singapore","4","15","18"
"Thailand","4","9","9"
"Argentina","3","3","3"
"Denmark","3","22","44"
"Egypt","3","3","6"
"Ireland","3","7","8"
"Japan","3","7","10"
"Portugal","3","10","10"
"Saudi Arabia","3","9","10"
"Finland","2","2","3"
"New Zealand","2","4","6"
"South Africa","2","11","26"
"South Korea","2","7","7"
"Brunei","1","1","1"
"Canada","1","3","3"
"Ghana","1","2","2"
"Indonesia","1","1","1"
"Iran","1","1","1"
"Israel","1","1","1"
"Malaysia","1","1","1"
"Morocco","1","1","1"
"Norway","1","3","4"
"Poland","1","2","2"
"Romania","1","3","3"
"Russia","1","3","4"
"Taiwan","1","1","1"
"Vietnam","1","1","3"