Circulating microRNA's as a diagnostic tool for hepatocellular carcinoma in a hyper endemic HIV setting, KwaZulu-Natal, South Africa: a case control study protocol focusing on viral etiology - Sartorius, K; Sartorius, B; Kramvis, A; Singh, E; Turchinovich, A; Burwinkel, B; Madiba, T; Winkler, CA (BMC Cancer, 2017)