ak ▁Le k , ▁while ▁the ▁final ▁two ▁years ▁of ▁study ▁are ▁on ▁the ▁Bang k ok ▁Advent ist ▁Hospital / A . I . U . ▁campus . ▁The ▁hospital ' s ▁A . I . U . ▁campus ▁includes ▁class rooms , ▁a ▁library , ▁and ▁d orm itory ▁facilities , ▁along ▁with ▁clin ical ▁n urs ing ▁facilities ▁inside ▁the ▁hospital . ▁In ▁ 1 9 5 5 ▁the ▁School ▁of ▁Mid w if ery ▁and ▁the ▁School ▁of ▁N urs ing ▁were ▁officially ▁opened . ▁The ▁total ▁bed ▁capacity ▁was ▁increased ▁in ▁ 1 9 5 8 ▁to ▁ 1 8 0 . ▁ ▁In ▁ 1 9 7 3 ▁Mission ▁Hospital ▁adopted ▁the ▁name ▁" B ang k ok ▁Advent ist ▁Hospital ". ▁The ▁new ▁Ralph ▁W add ell ▁Wing ▁was ▁opened ▁in ▁ 1 9 8 3 ▁to ▁increase ▁patients ▁accommod ation . ▁On ▁the ▁hospital ' s ▁ 5 0 th ▁anni versary ▁in ▁ 1 9 5 7 , ▁the ▁Pl eng ▁Vit iam al aks na ▁building ▁was ▁added ▁to ▁provide ▁b eds ▁for ▁Ob st et ric ▁and ▁Ped iat rics , ▁along ▁with ▁some ▁auxili ary ▁services . ▁ ▁In ▁ 1 9 9 0 , ▁Mission ▁Health ▁Prom otion ▁Center , ▁capable ▁of ▁housing ▁ 6 0 ▁people , ▁was ▁launched ▁in ▁Sar ab uri ▁Province , ▁north ▁of ▁Bang k ok . ▁The ▁Health ▁Prom otion ▁Center ▁is ▁located ▁adjacent ▁to ▁the ▁Mu ak ▁Le k ▁campus ▁of ▁Asia -