Transcranial Magnetic Stimulation / Multidisciplinary / Humans / Major Depressive Disorder / Effect size / Placebos / Meta Analysis / PLoS one / Systematic review / Major Depression / Random Effects Model / Measures of Effectiveness / Study design / Citalopram / Repetitive transcranial magnetic stimulation / Serotonin Uptake Inhibitors / Placebos / Meta Analysis / PLoS one / Systematic review / Major Depression / Random Effects Model / Measures of Effectiveness / Study design / Citalopram / Repetitive transcranial magnetic stimulation / Serotonin Uptake Inhibitors