Erratum to: J Artif Organs (2016) 19:249–256 DOI 10.1007/s10047-016-0890-0

In the original publication of the article, the reference mentioned below was not included.

The new reference should be labeled as Reference 4 and the subsequent reference numbers should be increased by 1.

4. Gupta P, Rettiganti M. Association between extracorporeal membrane oxygenation center volume and mortality among children with heart disease: propensity and risk modeling. Pediatr Crit Care Med. 2015;16:868–74.

It should be cited in the second paragraph of introduction as follows,

For example, most of the literature evaluating volume–outcome relationship in children undergoing heart surgery is based on annual cardiopulmonary bypass (CPB) cases per center [4, 5], while literature evaluating volume–outcome relationship in children receiving ECMO is based on annual ECMO cases per center [1–4].