An assessment of unstimulated salivary flow rate, IgA and clinical oral dryness among active and passive smokers oleh Seeme Nigar, Sobia Hassan, Afsheen Maqsood, Naseer Ahmed, Mansour Al-Askar, Sameer A. Mokeem, Montaser N. Alqutub, Nada Aldahian, Eman I. AlSagob, Abdulrahman A. AlMubarak, Fahim Vohra, Tariq Abduljabbar