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Corbella, Eduardo Calvo, Gema Collada Holgueras, Jesu´s Molina Paris, Gonzalo Lumbreras Garc´ia, Luis Olmo Enciso, et Miguel Lobo A´lvarez. "ABS50: Study of Resources in Asthma and COPD in the Community of Madrid (Spain)." Prim Care Respir J 2006.

Corbella, Eduardo Calvo, et al. "ABS50: Study of Resources in Asthma and COPD in the Community of Madrid (Spain)." Prim Care Respir J 2006.