References need to be formatted according to journal standards. The submission guidelines will tell you what style they want. Common styles include Harvard, JAMA, and Vancouver.
Most references in medical journals are sorted chronologically. The number should generally appear after the punctuation like this: One study found that daprodustat was an effective way to treat anemia in chronic kidney disease.1
Author-date citation systems are also sometimes used. The author and date will always come before the punctuation. Here is an example: “One study found that daprodustat was an effective way to treat anemia in chronic kidney disease (Johnson et al., 2012).”
EndNote output styles can be downloaded but should be checked because they are not always accurate.
If you are good at using EndNote, you can modify output styles by going to Edit > Output Styles and then selecting the style you want to edit.