Does restructuring hospitals result in greater efficiency? An empirical test using diachronic data, Health Services Management Research, 19(1): 1-12 [http://www.ingentaconnect.com/content/rsm/hsmr]. This paper was selected as one of the fifty best articles published in 2006 in management and was awarded an Emerald Management Reviews Citation of Excellence, the highest award offered in the field. [Emerald Management Reviews is an abstracting and indexing database that covers every article in the top 400 business and management journals world-wide, publishing 15,000 articles.]