(S (S (S (NP (BASENP (DT The) (NN number)) (PP (IN of) (NP (BASENP (NNS patients)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBD visited) (BASENP (DT the) (NNP MHI))) (PP (IN over) (BASENP (DT the) (JJ past) (JJ few) (NNS months))))))))) (VP (VP (VBD had) (VP (VBN been) (ADJP (RB abnormally) (JJ high)))) (CC and) (VP (VP (VBD reached) (BASENP (DT a) (NN peak))) (PP (IN in) (BASENP (DT the) (JJ past) (NN two) (NNS weeks)))))) (COMMA ,) (PP (VBG according) (PP (TO to) (NP (BASENP (DT the) (NN head)) (PP (IN of) (BASENP (JJ emergency) (NNS services))))))) (PERIOD .))