Semen quality(2) antiviral therapy(1) male reproduction(1) SARS-CoV-2(1) male infertility(1) Chronic Hepatitis B(1) ACE2-Ang-(1-7)-Mas axis(1) spermatozoa.(1) renin-angiotensin system(1) Hepatitis B virus(1) entecavir(1) angiotensin-converting enzyme 2.(1)