Al-Khafaji, J M Incidence of Horner syndrome with interscalene brachial plexus block and its importance in the management of head injury. [electronic resource] - Anesthesiology Jan 1986 - 127 p. digital Publication Type: Letter ISSN: 0003-3022 Standard No.: 10.1097/00000542-198601000-00028 doi Subjects--Topical Terms: Brachial PlexusCraniocerebral Trauma--surgeryHorner Syndrome--etiologyHumansNerve Block--adverse effects