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These cases demonstrate the need for blood volume studies in patients with high values for the blood haemoglobin and the packed cell volume in order to establish a differential diagnosis from myeloproliferative disorder or secondary polycythaemia.<\/jats:p>","DOI":"10.1136\/jcp.27.2.109","type":"journal-article","created":{"date-parts":[[2007,6,9]],"date-time":"2007-06-09T00:50:46Z","timestamp":1181350246000},"page":"109-112","source":"Crossref","is-referenced-by-count":11,"title":["Red face and reduced plasma volume"],"prefix":"10.1136","volume":"27","author":[{"given":"Sylvia W.","family":"Davies","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eveline","family":"Glynne-Jones","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. 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