1. Affandi MA, Khan I, Ngah SN (2018) Epidemiology and clinical features of adult patients with psoriasis in Malaysia: 10-year review from Malaysian psoriasis registry (20007-2016). Dermatol Res Pract 23:437147
2. Bardazzi F, Starace M, Bruni F, Magnano M, Piraccini BM, Alessandrini A (2019) Nail psoriasis: an updated review and expert opinion on available treatments, including biologics. Acta Derm Venereol 99:516–523
3. Benjegerdes KE, Hyde K, Kivelevitch D, Mansouri B (2016) Pustular psoriasis: pathophysiology and current treatment perspectives. Psoriasis (Auckl) 6:131–144
4. Burden AD, Dutz J, Kirby B (2016) Psoriasis and related disorders. In: Griffith C, Barker J, Bleiker T, Chalmers R, Creamer D (eds) Rook’s textbook of dermatology, 9th edn. Wiley, pp 35.1–35.45
5. Coates LC, Helliwell PS (2017) Psoriatic arthritis: state of the art review. Clin Med (Lond) 17(1):65–70