The influence of exotic and native plants on illnesses with physical and spiritual causes in the semiarid region of Piauí, Northeast of Brazil.

"Declarations Ethics approval and consent to participateThe research was authorized by the Ethics and Research Committee of the Federal University of Piauí (ERC/UFPI), under CAAE number: 60898722.3.0000.8057. Each participant signed the Informed Consent Form (ICF) and had their integrity ensured, according to National Health Council Resolution 466/12. Access to traditional knowledge was registered in the National System of Management of Genetic Heritage and Associated Traditional Knowledge (SisGen) under number AADE637. Consent for publicationThe individual informed consent of each participant was obtained when they signed a term (ICF) according to the Ethics and Research Committee of the Federal University of Piauí (ERC/UFPI). Competing interestsThe authors declare that they have financial or non-financial no competing interests. Competing interests The authors declare that they have financial or non-financial no competing interests."

"Funding This study was supported from the Dean of Graduate Studies of the Federal University of Piauí—UFPI."

"This study was approved by the Ethics and Research Committee of the Federal University of Piauí through the Brazil Platform under opinion number 5637518 (CAAE: 60898722.3.0000.8057), as provided for in Resolutions 466/2012 and 510/2016 of the National Health Council, which regulate research involving human beings. Each participant signed an Informed Consent Form (ICF) and was informed of the guarantee of confidentiality of the information collected, integrity, and the right to withdraw at any time. The study was registered in the National System of Genetic Resource Management and Associated Traditional Knowledge (SisGen) under number AADE637 and received authorization from SISBIO (Biodiversity Information and Authorization System) for collection of botanical material (registration number 85297-1)."