| Paulo D Picon Increasing rational use of cholinesterase inhibitors for Alzheimer's disease in Brazil: public health strategy combining guideline with peer-review of prescriptionsPaulo Dornelles Picon Department of Internal Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grand do Sul, Brazil Int J Technol Assess Health Care 26:205-10. 2010 Randomized clinical trial of a phytotherapic compound containing Pimpinella anisum, Foeniculum vulgare, Sambucus nigra, and Cassia augustifolia for chronic constipationPaulo D Picon Department of Internal Medicine and Chief of the Clinical Research Unit at Hospital de Clínicas, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil BMC Complement Altern Med 10:17. 2010
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