Meta-analysis of primary open versus closed cannulation strategy for totally implantable venous access port implantation. - Klaiber U; Probst P; Hackbusch M; Jensen K; Dörr-Harim C; Hüttner FJ; Hackert T; Diener MK; Büchler MW; Knebel P (Langenbeck's archives of surgery, 2021)