[1] Elrazi Univ, Fac Med, Khartoum, Sudan
[2] Fayoum Univ, Fac Med, Al Fayyum, Egypt
[3] Hashemite Univ, Fac Med, Zarqa, Jordan
[4] Al Azhar Univ, Fac Med, Cairo, Egypt
[5] Zagazig Univ, Fac Med, Zagazig, Egypt
[6] Khartoum Univ, Fac Med, Khartoum, Sudan
[7] Aleppo Univ, Fac Med, Aleppo, Syria
[8] NMC Royal Hosp, Khalifa City, Abu Dhabi, U Arab Emirates
[9] Natl Res Ctr, Dept Internal Med, Med Res Div, Cairo, Egypt
[10] Carl von Ossietzky Univ Oldenburg, Sch Med & Hlth Sci, Dept Psychiat, Oldenburg, Germany
[11] Univ Hosp Bonn, Dept Psychiat, Bonn, Germany
[12] Carl von Ossietzky Univ Oldenburg, Res Ctr Neurosensory Sci, Oldenburg, Germany
[13] Univ Ulm, Dept Psychiat & Psychotherapy3, Ulm, Germany