See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/281432837 Comparative Studies of Needle Free Injection Systems and Hypodermic Needle Injection: A Global Perspective Article · January 2013 CITATIONS 0 READS 49 1 author: Zubair Labu World University of Bangladesh 36 PUBLICATIONS 19 CITATIONS SEE PROFILE All content following this page was uploaded by Zubair Labu on 02 September 2015. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.