“…Vertical collaboration comprises cooperation among actors along the care value chain and has been argued to reduce hospitals' opportunistic behavior and enhance continuity of care; horizontal collaboration involves cooperative agreements among competitors (Zuckerman et al, 1995;Buchner et al, 2015). In the healthcare domain, hospital cooperation reportedly spurs efficiency gains and cost reduction because of the advantages associated with shared resources, medical infrastructure, and care provision (Dranove and Shanley, 1995;Olden et al, 2002;Buchner et al, 2015). In some industries, horizontal collaboration has also been associated with detrimental price fixing and anti-competitive behaviors (e.g., Teece, 1994).…”