References
- Kiefer M, Eymann R, Strowitzki M, Steudel WI. Gravitational shunts in longstanding overt ventriculomegaly in adults. Neurosurgery 2005;57:109–19.
- Czosnyka Z, Czosnyka M, Richards HK, Pickard JD. Posture-related overdrainage: comparison of the performance of 10 hydrocephalus shunts in vitro. Neurosurgery 1998;42:327.
- Freimann FB1, Sprung CJ. Shunting with gravitational valves – can adjustments end the era of revisions for overdrainage-related events? Neurol Neurosurg Psychiatry 2013;84:850–7.
- Lemcke J, Meier U, Müller C, et al. Safety and efficacy of gravitational shunt valves in patients with idiopathic normal pressure hydrocephalus: a pragmatic, randomised, open label, multicentre trial (SVASONA). J Neurol Neurosurg Psychiatry 2013;84:850–7.
- Roth J, Constantini S, Kesler A. Over-drainage and persistent shunt-dependency in patients with idiopathic intracranial hypertension treated with shunts and bariatric surgery. Surg Neurol Int 2015;6:S655–60.