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Trovafloxacin ( sold as Trovan by Pfizer and Turvel by Laboratorios Almirall ) is a broad spectrum antibiotic that inhibits the uncoiling of supercoiled DNA in various bacteria by blocking the activity of DNA gyrase and topoisomerase IV .
 Pfizer, Laboratorios Almirall
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pfizer, Laboratorios Almirall