RT Journal Article SR Electronic T1 Black hairy tongue cured concurrently with respiratory infection JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 434 OP 435 DO 10.3949/ccjm.84a.16044 VO 84 IS 6 A1 Fátima Tous-Romero A1 Sara Burillo-Martínez A1 Marta Prieto-Barrios A1 Lidia Maroñas-Jiménez YR 2017 UL http://www.ccjm.org/content/84/6/434.abstract AB