... measurements of peripheral blood and neuropsychological parameters in patients with MDD and healthy controls during a study period of eight weeks for the identification of biomarkers for the onset of antidepressants’ ... 11:16http://www.biomedcentral.com/1471-244X/11/16Page 4 of 10 STUDY PROT O C O L Open Access Peripheral blood and neuropsychological markers for the onset of action of antidepressant drugs in patients with Major Depressive DisorderAndré Tadić1†, ... UniversityMedical Centre, Mainz, Germany.3Clinic for Psychiatry and Psychotherapy,Katzenelnbogen, Germany.4Clinic for Psychiatry and Psychotherapy, Dr.Horst-Schmidt-Kliniken, Wiesbaden, Germany.Authors’...