N of 1 trials. Research is needed into why such trials are not more widely used.
Porta
M
M
Bolumar
F
F
Hernandez
I
I
Vioque
J
J
D015982:Bias; D018592:Cross-Over Studies; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy; D016032:Randomized Controlled Trials as Topic / Q000379:methods; D013806:Theophylline / Q000627:therapeutic use
D013806:Theophylline