A controlled trial of two forms of self-management education for adults with asthma - Wilson,S.R.; Scamagas,P.; German,D.F.; Hughes,G.W.; Lulla,S.; Coss,S.; Chardon,L.; Thomas,R.G.; Starr-Schneidkraut,N.; Stancavage,F.B. (The American Journal of Medicine, 1993)