Correspondencia
Contrarréplica a la carta de respuesta al artículo Encuesta poblacional sobre la prevalencia y los factores de riesgo de la enfermedad pulmonar obstructiva crónica en la provincia de Shanxi (China)
Counter-reply to the letter in response to the article A population-based survey of the prevalence and risk factors of chronic obstructive pulmonary disease in Shanxi province (China)
Department of Pulmonary and Critical Care Medicine, Shanxi Bethune Hospital Shanxi Academy of Medical Sciences, Taiyuan, Shanxi Province, China
