Cibergrafia

• http://familydoctor.org/familydoctor/es/diseases-conditions/ecoli-infection.html
• http://www.todopapas.com/embarazo/salud-embarazo/que-es-la-e-coli-1452
• http://kidshealth.org/parent/en_espanol/medicos/test_bac_culture_esp.html
• http://www.nlm.nih.gov/medlineplus/spanish/ency/article/000254.htm