Response options: Missing, Not asked, Not applicable, No answer, Don´t know, JP: 12 major large cities(i.e.Tokyo,Osaka,etc.), JP: 150,000 more residents cities, JP: 50,000 to 150,000 residents cities, JP: Up to 50,000 residents cities, JP: Rural districts, KR: Rural area, KR: Rural area with urban characters or suburb rural area, KR: Urban residence, KR: Urban commercial area, KR: Urban industrial area
Response options: Missing; Unknown; Inappropiate, Not asked, Not applicable (Born in this country), No answer, Don´t know, <2 yrs, 3-5 yrs, 5-10 yrs, 10-15 yrs, >15 yrs
