Hello!!! I´m Amada, a worker of Pasteur Institut. I need blood samples of health people, it means in general we´re all negative for this virus, to compare in my experiment. Preferably people who arrive two months ago, that´s include visiting, or people in Phnom Penh for a few days. I can not pay, I can only invite you for a coffe or khemer breakfast, it is not necessary coming in fasting state. I´ll be grateful if you come! And the onliest reward is the help in the future diagnosis in Cambodia. 
Contact :amada [dot] bolgut [at] gmail [dot] com, 0978704673