Develop an article about panic disorder and its definition according to UK NHS, WHO and DSM-5, and provide UK statistics with links to a source of information, symptoms and treatment. Use 2 key phrases: “panic disorder” and “panic attacks”. Make text more than 3000 words, add the first key phrase in the first paragraph, use British English and a friendly easy to understand style of writing, use active voice only, use subheadings with key phrases, use no more than 20 words per sentence, use transition words in more than 30% of sentences, and don’t use Consecutive sentences, make a paragraph no longer than 300 words. Create a title with a keyphrase and make it less than 60 symbols. Create a meta description and make it no longer than 160 symbols. Make text unique and avoid plagiarism across websites on the internet. Provide links to external sources if used. Provide materials by sections.