ott ▁edit ors , ▁Snow ▁Lion ▁Publications , ▁I th aca ▁NY , ▁ 1 9 8 9 . ▁▁ ▁An sp al , ▁St en ▁( 2 0 0 5 ). ▁The ▁Space ▁Section ▁of ▁the ▁Great ▁Per fection ▁( r D z ogs - chen ▁k long - s de ): ▁a ▁category ▁of ▁philosoph ical ▁and ▁med itative ▁teach ings ▁in ▁Tib et an ▁Buddh ism . ▁Th esis . ▁The ▁University ▁of ▁Os lo . ▁Source : ▁ ▁( access ed : ▁Th urs day ▁April ▁ 1 5 , ▁ 2 0 1 0 ) ▁ ▁External ▁links ▁ ▁Three ▁Se ctions ▁of ▁D z og chen ▁ ▁Category : D z og chen ▁Category : N ying ma ▁texts <0x0A> </s> ▁Ped iat rics ▁( also ▁sp elled ▁pa ed iat rics ▁or ▁p æ di atr ics ) ▁is ▁the ▁branch ▁of ▁medicine ▁that ▁involves ▁the ▁medical ▁care ▁of ▁inf ants , ▁children , ▁and ▁ad oles c ents . ▁The ▁American ▁Academy ▁of ▁Ped iat rics ▁recomm ends ▁people ▁be ▁under ▁ped iat ric ▁care ▁up ▁to ▁the ▁age ▁of ▁ 2 1 ▁( though ▁usually ▁only ▁min ors ▁are ▁required ▁to ▁be ▁under ▁ped iat ric ▁care ). ▁A ▁medical ▁doctor ▁who ▁special izes ▁in ▁this ▁area ▁is ▁known ▁as ▁a ▁ped iat ric ian , ▁or ▁pa ed iat ric ian . ▁The ▁word ▁ped iat rics ▁and ▁its ▁cogn ates ▁mean ▁" he aler ▁of ▁children "; ▁they ▁derive ▁from ▁two ▁Greek