J. Tilford, N. Payakachat, E. Kovacs, J. Pyne, W. Brouwer, T. Nick, J. Bellando, и K. Kuhlthau. PharmacoEconomics, 30 (8):
661-679(августа 2012)GR: R01MH089466/MH/NIMH NIH HHS/United States; GR: UA3MC11054/PHS HHS/United States; JID: 9212404; NIHMS399399; OID: NLM: NIHMS399399; OID: NLM: PMC3423960; PMCR: 2013/08/01 00:00; ppublish.
C. Geffers, D. Sohr, и P. Gastmeier. Infection Control and Hospital Epidemiology: The Official Journal of the Society of Hospital Epidemiologists of America, 29 (12):
1167--1170(декабря 2008)PMID: 19014317.