Utility of transfer factor to detect different bronchodilator responses in patients with chronic obstructive pulmonary disease

1. Izquierdo-Alonso, J.L.
2. Sánchez-Hernández, I.
3. Fernández Francés, J.
4. Castelao Naval, J.
5. Carrillo Arias, F.
6. Gallardo Carrasco, J.