Ragini Singh, Garima Panwar, Sucheta Malik, Meenal Babra, and Ghalaut PS. 2020. “A Comparative Study of Cross Match With and Without Centrifugation in Covid-19 Positive Blood Samples in Blood Bank of a Tertiary Care Center in North India”. International Journal of Research in Pharmaceutical Sciences 11 ((SPL 1):1079-83. https://ijrps.com/home/article/view/1775.