1851
Mutations associated with lamivudine - resistance in therapy - na ve hepatitis B virus ( HBV ) infected patients with and without HIV co - infection : implications for antiretroviral therapy in HBV and HIV co - infected South African patients .
 lamivudine, na, hepatitis B virus ( HBV ) infected, HIV co - infection, HBV and HIV co - infected
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 lamivudine, na, hepatitis B virus ( HBV ) infected, HIV co - infection, HBV and HIV co - infected