| Apathy, cognitive deficits and functional impairment in schizophrenia G Konstantakopoulos, D Ploumpidis, P Oulis, P Patrikelis, A Soumani, ... Schizophrenia research 133 (1-3), 193-198, 2011 | 177 | 2011 |
| Five-factor model of schizophrenic psychopathology: how valid is it? L Lykouras, P Oulis, K Psarros, E Daskalopoulou, A Botsis, ... European Archives of Psychiatry and Clinical Neuroscience 250, 93-100, 2000 | 147 | 2000 |
| Delusionality of body image beliefs in eating disorders G Konstantakopoulos, E Varsou, D Dikeos, N Ioannidi, F Gonidakis, ... Psychiatry research 200 (2-3), 482-488, 2012 | 118 | 2012 |
| Clinical characteristics of auditory hallucinations PG Oulis, VG Mavreas, JM Mamounas, CN Stefanis Acta Psychiatrica Scandinavica 92 (2), 97-102, 1995 | 95 | 1995 |
| The relationship between insight and theory of mind in schizophrenia G Konstantakopoulos, D Ploumpidis, P Oulis, P Patrikelis, S Nikitopoulou, ... Schizophrenia research 152 (1), 217-222, 2014 | 87 | 2014 |
| Beck Depression Inventory in the detection of depression among neurological inpatients L Lykouras, P Oulis, D Adrachta, E Daskalopoulou, N Kalfakis, ... Psychopathology 31 (4), 213-219, 1998 | 66 | 1998 |
| Mental pain and suicide risk: application of the Greek version of the Mental Pain and the Tolerance of Mental Pain scale. A Soumani, D Damigos, P Oulis, V Masdrakis, D Ploumpidis, V Mavreas, ... Psychiatrike= Psychiatriki 22 (4), 330-340, 2011 | 64 | 2011 |
| A magnetic resonance imaging study of hippocampal, amygdala and subgenual prefrontal cortex volumes in major depression subtypes: melancholic versus psychotic depression K Vassilopoulou, M Papathanasiou, I Michopoulos, F Boufidou, P Oulis, ... Journal of affective disorders 146 (2), 197-204, 2013 | 60 | 2013 |
| Differential diagnosis of obsessive-compulsive symptoms from delusions in schizophrenia: a phenomenological approach P Oulis, G Konstantakopoulos, L Lykouras, PG Michalopoulou World journal of psychiatry 3 (3), 50, 2013 | 54 | 2013 |
| Pregabalin in the discontinuation of long‐term benzodiazepines' use P Oulis, G Konstantakopoulos, AV Kouzoupis, VG Masdrakis, ... Human Psychopharmacology: Clinical and Experimental 23 (4), 337-340, 2008 | 54 | 2008 |
| Efficacy and safety of pregabalin in the treatment of alcohol and benzodiazepine dependence P Oulis, G Konstantakopoulos Expert Opinion on Investigational Drugs 21 (7), 1019-1029, 2012 | 51 | 2012 |
| Psychotic (delusional) major depression in late life: a clinical study R Gournellis, L Lykouras, A Fortos, P Oulis, V Roumbos, ... International journal of geriatric psychiatry 16 (11), 1085-1091, 2001 | 51 | 2001 |
| Clinical correlates of age of onset in psychotic depression R Gournellis, P Oulis, E Rizos, E Chourdaki, A Gouzaris, L Lykouras Archives of Gerontology and Geriatrics 52 (1), 94-98, 2011 | 50 | 2011 |
| The positive and negative syndrome scale (PANSS) E Lykouras, A Botsis, P Oulis Athens, Greece: Tsiveriotis Ed, 1994 | 50* | 1994 |
| Pregabalin in the treatment of alcohol and benzodiazepines dependence P Oulis, G Konstantakopoulos CNS neuroscience & therapeutics 16 (1), 45-50, 2010 | 48 | 2010 |
| Psychotic major depression in older people: a systematic review R Gournellis, P Oulis, R Howard International journal of geriatric psychiatry 29 (8), 784-796, 2014 | 47 | 2014 |
| Clinical subtypes of schizophrenic disorders: a cluster analytic study L Lykouras, P Oulis, E Daskalopoulou, K Psarros, GN Christodoulou Psychopathology 34 (1), 23-28, 2001 | 44 | 2001 |
| Psychotic (delusional) major depression in the elderly and suicidal behaviour L Lykouras, R Gournellis, A Fortos, P Oulis, GN Christodoulou Journal of affective disorders 69 (1-3), 225-229, 2002 | 42 | 2002 |
| Indoleamine 2, 3-dioxygenase and immune changes under antidepressive treatment in major depression in females M Zoga, P Oulis, S Chatzipanagiotou, VG Masdrakis, P Pliatsika, ... in vivo 28 (4), 633-638, 2014 | 41 | 2014 |
| The relationship of Theory of Mind with symptoms and cognitive impairment in bipolar disorder: a prospective study. N Ioannidi, G Konstantakopoulos, D Sakkas, P Oulis Psychiatrike= Psychiatriki 26 (1), 17-27, 2015 | 40 | 2015 |
