Joint EFLM-COLABIOCLI recommendation for venous blood sampling - Simundic, A M; Bölenius, K; Cadamuro, J; Working Group for Preanalytical Phase (WG-PRE), of the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM) and Latin American Working Group for Preanalytical Phase (WG-PRE-LATAM) of the Latin America Confederation of Clinical Biochemistry (COLABIOCLI) (Clin Chem Lab Med, 2018)