Pediatric ultrasound-guided dorsal penile nerve block and sedation in spontaneous breathing: a prospective observational study oleh Bruno Dottore, Francesco Meroi, Francesco Meroi, Serena Tomasino, Daniele Orso, Daniele Orso, Matteo Comuzzi, Matteo Comuzzi, Nicola Vernaccini, Luigi Vetrugno, Luigi Vetrugno, Sergio Intini, Sergio Intini, Tiziana Bove, Tiziana Bove