The Fox guarding the clinical trial: internal vs. external validity in randomized studies.
Goodwin
P J
PJ
Pritchard
K I
KI
Spiegel
D
D
D001943:Breast Neoplasms / Q000401:mortality / Q000523:psychology*; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D011615:Psychotherapy, Group; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000592:standards*; D015203:Reproducibility of Results; D012107:Research Design; D015996:Survival Rate / Q000639:trends