Ringwald Ringwald J J Mertz Mertz I I Zimmermann Zimmermann R R Hepatitis B vaccination status among healthy adults in Germany Hepatitis B vaccination status among healthy adults in Germany Health Policy Health Policy 2006 2006 79 79 306 306 312 312 10.1016/j.healthpol.2006.01.012 10.1016/j.healthpol.2006.01.012 supplied-pmid 16516334? This evidence concerns the gene PPIB and hepatitis A virus infection.