Pisit Tangkijvanich. 2005. Prevalence and clinical significance of hepatitis B viral genotypes and mutations. [Bangkok:Chulalongkorn University];
Pisit Tangkijvanich. (2005) Prevalence and clinical significance of hepatitis B viral genotypes and mutations. Chulalongkorn University]:[Bangkok.
Pisit Tangkijvanich. Prevalence and clinical significance of hepatitis B viral genotypes and mutations. [Bangkok:Chulalongkorn University], 2005. Print.
Pisit Tangkijvanich. (2005) Prevalence and clinical significance of hepatitis B viral genotypes and mutations. Chulalongkorn University]:[Bangkok.