||Select one date or all dates.
|Word or phrase
||Search on a word such as "adverse" or a phrase such as "adverse event".
|Beginning of word
||Search on the beginning of a word. For example, searching on "investigat" finds "investigator" and "investigational", but not "subinvestigator".
||Search on text that may occur in the middle of a word or across words. For example, searching on "investigator" finds "subinvestigators"; searching on “to cha” finds “to chance”.
|Punctuation is significant
||Limit results based on the presence or absence of punctuation. For example, searching on "FDA-approved" finds only "FDA-approved", while searching on "FDA approved" finds only "FDA approved". With this option unselected, searching on "crossover" will find both "crossover" and "cross-over".
|Search within results below
||If your initial search returns too many results, this option allows you to search only among the results previously found.