The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following organisms is NOT implicated in  the etiology of Periodontal disease   (A) Bacteroides   (B) Wolinella   (C) Neisseria   (D) Eikenella
['(C) Neisseria <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Bacteroides \n (B) Wolinella \n (C) Neisseria \n (D) Eikenella <> possible answers', '  Which of the following organisms is NOT implicated in  the etiology of Periodontal disease <> context@']