Letter to the Editor
Reply to “How to limit bias in quasiexperimental studies”
Respuesta a «Cómo limitar los sesgos en estudios cuasiexperimentales
José María Barbero-Allendea,b,
, Eduardo Montero-Ruizc, Alfonso Vallés-Purroyd, José Sanz-Morenoa,b
Corresponding author
a Servicio de Medicina Interna, Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
b Departamento de Medicina y Especialidades Médicas, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
c Servicio de Medicina Interna, Hospital Universitario Ramón y Cajal, Madrid, Spain
d Servicio de Cirugía Ortopédica y Traumatológica, Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
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