MAP20120043725 Roll, Kathrin Effect of type of insurance and income on waiting time for outpatient care / Kathrin Roll, Tom Stargardt, Jonas Schreyögg En: Geneva papers on risk and insurance : issues and practice. - Geneva : The Geneva Association, 1976- = ISSN 1018-5895. - 08/10/2012 Volumen 37 Número 4 - octubre 2012 I. Título.