My research focuses on outdoor and indoor air pollution exposure assessment and epidemiology. I am an avid collaborator and believe that the most pressing environmental health problems must be addressed with interdisciplinary team science. Honestly speaking, I am a big fan of well-known scientists in the field of air pollution and health effects because I believe that their works are inspiring to me and improve my knowledge in various parts of science. Therefore, I have always tried to invite some of them to collaborate with the studies, in which I had been the lead investigator.