title: "Thunderclap" headache in a patient with depression: Question.
authors.affiliation: Department of Diagnostic Imaging, National University Hospital, Singapore, Level 2 Main Building, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074, Singapore. Electronic address: z_junwei@hotmail.com.
authors.forename: Junwei
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Diagnostic Imaging, National University Hospital, Singapore, Level 2 Main Building, National University Hospital, 5 Lower Kent Ridge Road, Singapore 119074, Singapore; Department of Diagnostic Radiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore 119228, Singapore. Electronic address: ivyanil10@gmail.com.
authors.forename: Gopinathan
authors.initials: G
authors.lastname: Anil