Razak, Abdul, Iftikhar Hussain, Rehan Rafique, Sajid Hussain, Muhammed Noor, and Asaad Nayyer. “Serum Analysis of Hydro-Pericardium Syndrome (HPS) by Filter-Paper Blood Sampling Technique: As Substitute to Serum Collection Technique”. International Archives of BioMedical and Clinical Research 5, no. 1 (March 21, 2019): 50-53. Accessed September 18, 2019. https://iabcr.org/index.php/iabcr/article/view/466.