WHO guidelines on the pharmacological treatment of persisting pain in children with medical illnesses / 
World Health Organization. 
 - Geneva :  World Health Organization,  2012. 
 - 166 с. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>978-92-4-154812-0 
<br/><br/><label>Subjects--Corporate Names: </label><br/>World health organization
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pain--drug therapy<br/>Pain--classification<br/>Pain measurement<br/>Analgesics, Opioid<br/>Drugs, Essential<br/>Drug and narcotic control<br/>Palliative Care<br/>Child<br/>Guidelines