Allergic reactions to betalactams: studies in a group of patients allergic to penicillin and evaluation of cross‐reactivity with cephalosporin

1. Audicana, M.
2. Bernaola, G.
3. Urrutia, I.
4. Echechipia, S.
5. Gastaminza, G.
6. Muñoz, D.
7. Fernández, E.
8. Fernández de Corres, L.