Barlow, Julie; Charlton, Bruce G. (9 September 2005). "Letter to the Editor | Self-management and pregnancy–safe interventions for panic, phobia and other anxiety-disorders might include over-the-counter (OTC) 'SSRI' antihistamines such as diphenhydramine and chlorpheniramine". Acta Psychiatrica Scandinavica. 112 (3): 323. doi:10.1111/j.1600-0447.2005.00611.x. PMID16156843. S2CID19105124.
Barlow, Julie; Charlton, Bruce G. (9 September 2005). "Letter to the Editor | Self-management and pregnancy–safe interventions for panic, phobia and other anxiety-disorders might include over-the-counter (OTC) 'SSRI' antihistamines such as diphenhydramine and chlorpheniramine". Acta Psychiatrica Scandinavica. 112 (3): 323. doi:10.1111/j.1600-0447.2005.00611.x. PMID16156843. S2CID19105124.
Barlow, Julie; Charlton, Bruce G. (9 September 2005). "Letter to the Editor | Self-management and pregnancy–safe interventions for panic, phobia and other anxiety-disorders might include over-the-counter (OTC) 'SSRI' antihistamines such as diphenhydramine and chlorpheniramine". Acta Psychiatrica Scandinavica. 112 (3): 323. doi:10.1111/j.1600-0447.2005.00611.x. PMID16156843. S2CID19105124.