Control of allergic rhinitis in four latin american countries: Rinola study oleh Diana L Silva, Susana de Barayazarra, Antonio Valero, Elizabeth Garcia, Silvia Uriarte, Augusto Peñaranda, Edgardo Chapman, Maria B Garcia, Jaime Ocampo, Viviana Valencia, Sergio Moreno, Silvana Corelli, Belkis Lopez, Luis F Ramírez, Lucía Cecilia Pérez, Edgardo Jares, Carlos D Serrano