Syed Muarraf Hussain , Saadat Ali Khan,Syeda Maria Ali , Syed Irfan Ahmed ,Nelofar Jamil. (2013). Effects of Pollen Allergy on Pulmonary Function Tests. Journal of Rawalpindi Medical College, 17(1). Retrieved from http://journalrmc.com/index.php/JRMC/article/view/497