LOS ANGELES (AP) - Vivian Campbell says his fellow members of Def Leppard helped him get through his battle against cancer. The guitarist says he leaned on group members to help him perform as he worked his way through a diagnosis of Hodgkin's lymphoma - and the chemotherapy he had to take to help him recover. Campbell started treatment in April - but was able to go along with the band for a monthlong tour that wrapped up in July - slipping in chemo treatments between show dates. Campbell says being with the group "was a big part" of his mental recovery from the disease. He says it gave him the chance to "work through it instead of staying at home and feeling sorry for himself."