Simultaneous Measurements of Chemical Compositions of Fine Particles during Winter Haze Period in Urban Sites in China and Korea oleh Minhan Park, Yujue Wang, Jihyo Chong, Haebum Lee, Jiho Jang, Hangyul Song, Nohhyeon Kwak, Lucille Joanna S. Borlaza, Hyunok Maeng, Enrique Mikhael R. Cosep, Ma. Cristine Faye J. Denna, Shiyi Chen, Ilhwa Seo, Min-Suk Bae, Kyoung-Soon Jang, Mira Choi, Young Hwan Kim, Moonhee Park, Jong-Sik Ryu, Sanghee Park, Min Hu, Kihong Park