00511nam a2200157Ia 4500 211231s9999 xx 000 0 und d 978-92-4-154812-0 Jayakar Knowledge Resource Centre World health Organization WHO guidelines on the pharmacological treatment of persisting pain in children with medical illnesses 1st World Health Organisation Switzerland 2012 166p p. Pain-drug therapy 1 315951 315951 0 0 0 0 2 2 2 0000-00-00 0 L:417:6 P2 447339 2022-01-14 0000-00-00 1