TY - GEN AU - Ernst,E AU - Matrai,A TI - Pitfalls in blood sampling. Influence of posture and venous occlusion time SN - 0390-6078 PY - 1986///1110 KW - Adult KW - Blood Donors KW - Blood Specimen Collection KW - methods KW - Evaluation Studies as Topic KW - Hematocrit KW - Hemodilution KW - Humans KW - Posture KW - Venous Pressure N1 - Publication Type: Journal Article ER -