Investigating the comparative effect of vitamin D level with the type of complications in Henoch Schönlein purpura and Kawasaki disease Mehrnoush Hassas Yeganeh; Reza Sinaei; Mitra Rouhi; Reza Shiari; Vadood Javadi Parvaneh; Khosro Rahmani; Erfan Sheikhbahaei;

Salivary gland ultrasound in clinical practice: What is its real usefulness? Karen Carpio Astudillo; Fernando Montero Reyes; Iustina Janta; Juan Molina Collada; Ana M. Anzola; Liz R. Caballero Motta; Belén Serrano-Benavente; Julia Martínez-Barrio; Alfonso Ariza Lapuente; Javier Rivera Redondo; Carlos González-Fernández; Indalecio Monteagudo; José María Álvaro-Gracia; Juan Carlos Nieto-González;

Prevalence and demographic characteristics of Sjögren's syndrome in Colombia, based on information from the Official Ministry of Health Registry Daniel G. Fernández-Ávila; Diana N. Rincón-Riaño; Santiago Bernal-Macías; Juan M. Gutiérrez Dávila; Diego Rosselli;