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.
S. Shehab, N. Keller, A. Barkay, L. Leitner, A. Leventhal, и C. Block. European Journal of Clinical Microbiology & Infectious Diseases: Official Publication of the European Society of Clinical Microbiology, 17 (11):
749--53(ноября 1998)PMID: 9923513.