"country","institutions","researchers","collaborations"
"United Kingdom","63","1291","3389"
"Peoples Republic of China","24","84","118"
"United States of America","17","47","82"
"Italy","15","57","96"
"Spain","15","26","26"
"Germany","13","65","87"
"France","11","28","38"
"India","9","27","49"
"The Netherlands","8","21","26"
"Australia","5","9","15"
"Belgium","5","11","13"
"Brazil","4","8","8"
"Singapore","4","12","15"
"Switzerland","4","23","30"
"Thailand","4","8","8"
"Argentina","3","3","3"
"Denmark","3","17","38"
"Egypt","3","3","6"
"Ireland","3","7","8"
"Japan","3","7","10"
"Portugal","3","9","9"
"Saudi Arabia","3","8","9"
"Finland","2","2","3"
"South Africa","2","10","21"
"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"
"New Zealand","1","3","5"
"Norway","1","2","2"
"Poland","1","2","2"
"Romania","1","3","3"
"Russia","1","3","4"
"Taiwan","1","1","1"
"Vietnam","1","1","3"