SHOJAI, M.; KAZEMNEJAD, A.; ZAYERI, F.; VAHEDI, M. Application of semi-parametric single-index two-part regression and parametric two-part regression in estimation of the cost of functional gastrointestinal disorders. Gastroenterology and Hepatology from Bed to Bench, [S. l.], v. 6, n. 4, p. Gastroenterol Hepatol Bed Bench 2013;6(4):202–209, 2013. DOI: 10.22037/ghfbb.v6i4.439. Disponível em: https://journals.sbmu.ac.ir/ghfbb/index.php/ghfbb/article/view/439. Acesso em: 5 may. 2024.