title: The metamorphosis: conversion in historical context.
authors.affiliation: Division of Health Policy and Management, School of Public Health, Columbia University, New York, NY 10032, USA.
authors.forename: L D
authors.initials: LD
authors.lastname: Brown
mesh_terms: D054598:Blue Cross Blue Shield Insurance Plans / Q000458:organization & administration* / Q000639:trends; D006801:Humans; D007449:Investments / Q000639:trends; D009518:New York; D009936:Organizational Innovation; D009939:Organizations, Nonprofit / Q000639:trends; D010067:Ownership / Q000639:trends