题名：The choice of medical providers in rural Benin: A comparison of discrete choice models作者：Denis Bolduc ( denis.bolduc@ecn.ulaval.ca), Guy Lacroix ( guy.lacroix@ecn.ulaval.ca) and Christophe MULLER ( christophe.muller@univmed.fr) 来源：Journal of Health Economics, 1996, vol. 15, issue 4, pages 477-498