Möller JC, Baumann CR, Burkhard PR, Kaelin-Lang A, Küng I, Onuk K, Bohlhalter S. Characterisation of advanced Parkinson’s disease: OBSERVE-PD observational study – results of the Swiss subgroup. Swiss Med Wkly [Internet]. 2021 Mar. 6 [cited 2024 Apr. 25];151(0910):w20419. Available from: https://smw.ch/index.php/smw/article/view/2975