APA

Rajeev Ranjan, University of Delhi. Faculty of Medical Sciences. Department of Neurology, Dr. Debashish Chowdhury Gu, Dr. Geeta A Khwaja Gu, Dr. Meena Gupta Gu & University of Delhi. Faculty of Medical Sciences. Department of Neurology. (2009). Chronic daily headache - causes, subtypes, pattern of analgesic abuse and its association with anxiety in a tertiary care setup. : .

Chicago

Rajeev Ranjan, University of Delhi. Faculty of Medical Sciences. Department of Neurology, Dr. Debashish Chowdhury Gu, Dr. Geeta A Khwaja Gu, Dr. Meena Gupta Gu and University of Delhi. Faculty of Medical Sciences. Department of Neurology. 2009. Chronic daily headache - causes, subtypes, pattern of analgesic abuse and its association with anxiety in a tertiary care setup. : .

Harvard

Rajeev Ranjan, University of Delhi. Faculty of Medical Sciences. Department of Neurology, Dr. Debashish Chowdhury Gu, Dr. Geeta A Khwaja Gu, Dr. Meena Gupta Gu and University of Delhi. Faculty of Medical Sciences. Department of Neurology. (2009). Chronic daily headache - causes, subtypes, pattern of analgesic abuse and its association with anxiety in a tertiary care setup. : .

MLA

Rajeev Ranjan, University of Delhi. Faculty of Medical Sciences. Department of Neurology, Dr. Debashish Chowdhury Gu, Dr. Geeta A Khwaja Gu, Dr. Meena Gupta Gu and University of Delhi. Faculty of Medical Sciences. Department of Neurology. Chronic daily headache - causes, subtypes, pattern of analgesic abuse and its association with anxiety in a tertiary care setup. : . 2009.