@article {218045,
	title = {Does smoking afect level of seropositivity in RA? A post-HOC global  and inter-country analysis of COMORA cohort},
	journal = {Rheumatology International},
	volume = {41},
	year = {2021},
	pages = {699 - 705},
	author = {Bassel El Zorkany and Abir Mokbel and Sherif M. Gamal and Ihsane Hmamouchi and Maxime Dougados}
}
