Article 1 Asia 1 Asia-Pacific 1 China 1 Cost of Illness 1 Health Care Costs 1 Humans 1 Pacific islands 1 Pulmonary Disease, Chronic Obstructive 1 Singapore 1 South Korea 1 Taiwan 1 Thailand 1 chronic obstructive lung disease 1 chronic obstructive pulmonary disease 1 complication 1 cost benefit analysis 1 cost of illness 1 direct costs economics 1 health care cost 1 health economics 1 human 1 indirect costs 1 priority journal 1 societal costs 1 standards 1 statistics and numerical data 1 systematic review 1