Saliva metabolomic profile of COVID-19 patients associates with disease severity. - Saheb Sharif-Askari, Narjes; Soares, Nelson Cruz; Mohamed, Hajer A.; Saheb Sharif-Askari, Fatemeh; Alsayed, Hawra Ali Hussain; Al-Hroub, Hamza; Salameh, Laila; Osman, Rufaida Satti; Mahboub, Bassam; Hamid, Qutayba; Semreen, Mohammad H.; Halwani, Rabih (Metabolomics, 2022)