Bern C, Montgomery SP, Herwaldt BL, et al. (November 2007). «Evaluation and treatment of chagas disease in the United States: a systematic review». JAMA298 (18): 2171–81. doi:10.1001/jama.298.18.2171. PMID18000201.
Bern C, Montgomery SP, Herwaldt BL, et al. (November 2007). «Evaluation and treatment of chagas disease in the United States: a systematic review». JAMA298 (18): 2171–81. doi:10.1001/jama.298.18.2171. PMID18000201.