1. Managing pain: the fifth vital sign;Merboth;Nurs. Clin.,2000
2. Pain management in neonates;Larsson;Acta Paediatr.,1999
3. Consensus statement for the prevention and management of pain in the newborn;Anand;Arch. Pediatr. Adolesc. Med.,2001
4. Neonatal pain in very preterm infants: long-term effects on brain, neurodevelopment and pain reactivity;Grunau;Rambam Maimonides Med. J.,2013
5. Do neonates and small infants feel pain?;Hertel;Nord. Med.,1995