Hayward, Robert M Post-collection, pre-measurement variables affecting VEGF levels in urine biospecimens. [electronic resource] - Journal of cellular and molecular medicine - 343-50 p. digital Publication Type: Journal Article; Research Support, N.I.H., Intramural ISSN: 1582-1838 Standard No.: 10.1111/j.1582-4934.2007.00135.x doi Subjects--Topical Terms: Biomarkers, Tumor--urineFreezingHumansNeoplasms--radiotherapyPolypropylenes--chemistrySpecimen HandlingVascular Endothelial Growth Factor A--urine