Author information:
(1)Department of Pediatrics, Hospital Universitario de Fuenlabrada, Madrid, 
Spain. Electronic address: arantxa_vidal_esteban@hotmail.com.
(2)Department of Pediatrics, Hospital Universitario de Fuenlabrada, Madrid, 
Spain. Electronic address: daninatera@hotmail.com.
(3)Department of Dermatology, Hospital Universitario de Fuenlabrada, Madrid, 
Spain. Electronic address: diego.martinez@salud.madrid.org.
(4)Department of Ophtalmology, Hospital Universitario de Fuenlabrada, Madrid, 
Spain. Electronic address: alberto.reche@salud.madrid.org.
(5)Department of Pediatrics, Hospital Universitario de Fuenlabrada, Madrid, 
Spain. Electronic address: mariarocio.rodriguez@salud.madrid.org.
(6)Department of Pediatrics, Hospital Universitario de Fuenlabrada, Madrid, 
Spain. Electronic address: crisalfaroiznaola@gmail.com.
(7)Department of Pediatrics, Hospital Clínico San Carlos, Madrid, Spain. 
Electronic address: tsantos.hflr@salud.madrid.org.