title: Methodologic differences in major depression and panic disorder studies.
mesh_terms: D001008:Anxiety Disorders / Q000175:diagnosis / Q000235:genetics* / Q000523:psychology; D003866:Depressive Disorder / Q000175:diagnosis / Q000235:genetics* / Q000523:psychology; D005239:Fear; D006801:Humans; D010200:Panic; D012107:Research Design / Q000592:standards*