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- [6] UK NATIONAL EXTERNAL QUALITY ASSESSMENT SCHEME (NEQAS) IN BLOOD-COAGULATION CLINICAL AND LABORATORY HAEMATOLOGY, 1989, 11 (01): : 71 - 73
- [8] UK NATIONAL EXTERNAL QUALITY ASSESSMENT SCHEME (NEQAS) IN BLOOD-COAGULATION - REPLY CLINICAL AND LABORATORY HAEMATOLOGY, 1989, 11 (01): : 73 - 74