Voice problems in chronic cough: prevalence and implications for health and sick leave in a Northern European population by Sofia Ögefeldt, Greta Öhlund Wistbacka, Ellika Schalling, Henrik Johansson, Andrei Malinovschi, Christer Janson, Lars Modig, Mathias Holm, Rain Jögi, Christine Cramer, Thorarinn Gislason, Ane Johannessen, Össur Ingi Emilsson

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