text: SELECT
      t1.ARTICLE_DOI, t5.COUNTRYCODE, t5.INSTITUTION_FULL
  FROM 
      BIORXIV_ALL_ARTICLES t1
  INNER JOIN
    SCOPUS_B_2018.ITEMS t2
  ON
    t1.ARTICLE_DOI = lower(t2.DOI)
  INNER JOIN
    SCOPUS_B_2018.ITEMS_AUTHORS_INSTITUTIONS t3
  ON
    t2.PK_ITEMS = t3.FK_ITEMS
    AND t3.AUTHOR_POSITION = 1
  INNER JOIN
    SCOPUS_B_2018.AUTHORS t4
  ON
    t3.FK_AUTHORS = t4.PK_AUTHORS
  INNER JOIN
    SCOPUS_B_2018.INSTITUTIONS t5
  ON
    t3.FK_INSTITUTIONS = t5.PK_INSTITUTIONS
  
  
  
  
  