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Created by writer Louise Simonson and artist/co-writer Rob Liefeld , the original MLF first fully appeared in The New Mutants # 87 ( March 1990 ) .
 Louise Simonson, Rob Liefeld
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Louise Simonson, Rob Liefeld