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Mr. Liang, a citizen of Nanjing, aged 43, is a business employee of a company with a history of smoking. Usually busy at work, frequent business trips and overtime, visiting customers during the day,

Ms. Zhang, 45 years old, lives in Suzhou and is an executive of a listed company. Ms. Zhang and her husband have two children. She is the envy of countless friends around her with her vigorous behavio

Ms. Fang, a resident of Suzhou, is 48 years old. She had a harmonious family, good health and a happy life.One day three years ago, Ms. Fang began to have a mild dry cough, which was only regarded as