Efficacy and safety of medicinal plants or related natural products for fibromyalgia: a systematic review - Nascimento, Simone de Souza; Santana, Josimari Melo de; Nampo, Fernando Kenji; Ribeiro, Êurica Adélia Nogueira; Silva, Daniel Lira da; Araújo-Júnior, João Xavier; Almeida, Jackson Roberto Guedes da Silva; Bonjardim, Leonardo Rigoldi; Araújo, Adriano Antunes de Souza; Quintans-Júnior, Lucindo José (Indian Journal of Dental Research, 2013)