Insurers' Competitive Strategy and Enrollment in Newly Offered Preferred Provider Organizations (PPOs)
2007 ◽
Vol 44
(4)
◽
pp. 400-411
◽
2017 ◽
Vol 32
(3)
◽
pp. 229-248
2004 ◽
Vol 23
(5)
◽
pp. 419-422
◽