He required treatment for apnea prematurity with caffeine, which he also remains on at the time of this dictation.
 He had no respiratory symptoms
(ROOT (S (NP (PRP He)) (VP (VBD required) (NP (NP (NN treatment)) (PP (IN for) (NP (NP (NN apnea) (NN prematurity)) (PP (IN with) (NP (NP (NN caffeine)) (, ,) (SBAR (WHNP (WDT which)) (S (NP (PRP he)) (ADVP (RB also)) (VP (VBZ remains) (PRT (IN on)) (PP (IN at) (NP (NP (DT the) (NN time)) (PP (IN of) (NP (DT this) (NN dictation)))))))))))))) (. .)))
(ROOT (S (NP (PRP He)) (VP (VBD had) (NP (DT no) (JJ respiratory) (NNS symptoms)))))
( He ( ( required ( treatment ( for ( ( apnea prematurity ) ( with ( ( caffeine , ) ( which ( he ( also ( ( remains on ) ( at ( ( the time ) ( of ( this dictation ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
( He ( had ( no ( respiratory symptoms ) ) ) )