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2.Nice guidelines-Parkinson’s Disease; 2006

3.European physiotherapy guidelines November  2013

4.European Parkinson’s disease association guidelines 2014-

5.BMJ- tremor,2013, 347.  M Pippis, E matthews, M Dehabadi.

6.BMJ- physiotherapy interventions in PD- august 2012;345; C Tomlinson, S Patel.

7.BNF-parkinsons medication

8.NEJM-tai chi for Parkinson’s disease; 202; 366;511

9.Poewe   et al. Levodopa in the long term treatment  of Parkinson’s disease an old drug still going strong- ” clinical archives aging2010- p229-238.