Further research is needed and families still need help.
( ( ( ( ( Further research ) ( is needed ) ) and ) ( families ( still ( need help ) ) ) ) . )
(ROOT (S (S (NP (JJ Further) (NN research)) (VP (VBZ is) (VP (VBN needed)))) (CC and) (S (NP (NNS families)) (ADVP (RB still)) (VP (MD need) (VP (VB help)))) (. .)))
Further research must be conducted to determine what causes SIDS.
( ( Further research ) ( ( must ( be ( conducted ( to ( determine ( what ( causes SIDS ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Further) (NN research)) (VP (MD must) (VP (VB be) (VP (VBN conducted) (S (VP (TO to) (VP (VB determine) (SBAR (WHNP (WP what)) (S (VP (VBZ causes) (NP (NNS SIDS))))))))))) (. .)))