1Public Health College, Harbin Medical University, 157 BaoJian Road, NanGang District, Harbin, P. R. China 150086.
2Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115-5737, USA.
3Department of Pharmacology, Harbin Medical University, Harbin, Heilongjiang, P. R. China 150081.
Email: [email protected], [email protected]