How frequently does palmoplantar psoriasis affect the palms and/or soles? A systematic review and meta-analysis - Timotijević, Zorica; Trajković, Goran; Jankovic, Janko; Relić, Milijana; Đorić, Dragica; Vukićević, Danica; Relić, Goran; Rašić, Dragiša; Filipović, Milan; Janković, Slavenka (Advances in Dermatology and Allergology/Postępy Dermatologii i Alergologii, 2019)