Before revision:  A study of the 50 largest American newspapers with available online archives found that 26 (52%DIF > ) covered the original article's publication, while 20 (40%) covered its retraction.
After revision: " A study of the 50 largest American newspapers with available online archives found that 26 (52%DIF > ) covered the original article's publication, while 20 (40%) covered its retraction.