Dr.NIRMAL SUJITHA. I.J, and Dr.V.R.PRAKASH. “STUDY OF PREANALYTICAL ERRORS IN THE CLINICAL BIOCHEMISTRY LABORATORY OF A MEDICAL COLLEGE HOSPITAL”. International Journal of Pharma and Bio Sciences, vol. 7, no. 3, Sept. 2016, pp. 503-6, https://ijpbs.net/index.php/journal/article/view/5259.