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Expectoration or sputum production is the act of coughing up and spitting out the material produced in the respiratory tract.
Contact our team for more information and advice
Azure Healthcare
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Licence number: 70003
Room A, 4/F, Genesis
33-35 Wong Chuk Hang Road,
Wong Chuk Hang, Hong Kong
香港島黃竹坑黃竹坑道
33-35號創協坊4樓A室
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