Microsoft has released health CUI - A set of guidelines docs and web controls that helps building better health related systems.
How is this has anything to do with you? Because the set of 16 controls included in the suite contains some controls that can be useful to any web developer.
Take for example the Date\Time input controls that allows you to input dates using free-text, the calendar, or the arrow keys.
Take a look at a live demo of the controls, you might find something you like..