1. Respiratory dysfunction in Parkinson's disease;Brown;Clin Chest Med,1994
2. Obstructive respiratory dysfunction in parkinsonian patients;Neu;Am Rev Respir Dis,1967
3. The causes of abnormal pulmonary function in Parkinson's disease;Obenour;Am Rev Respir Dis,1972
4. Involvement of upper-airway muscles in extrapyramidal disorders;Vincken;N Engl J Med,1984
5. Levodopa in Parkinson's disease;Nakane;Arch Intern Med,1972