Please choose the correct ending to complete the given sentence: Health: [header] How to participate in needle exchange programs [title] Look up a needle exchange program (nep) in your area. [step] To look for an nep in your area, do some research online. There are online databases that list neps in certain areas, and most organizations have their own websites to help with outreach.

Ending1: The names and details of all of the sites that provide these resources will be added to your search results. [title] Visit your local pharmacy or grocery store. Ending2: There are neps in 90 countries worldwide, so there may be one nearby. [substeps] You may also be able to ask your local doctor if he knows of a nep in your area. Ending3: Once you have research, you can begin to find needles in your area. [substeps] To find an nep, do some internet research. Ending4: [substeps] In a1, you will be able to search for an intramural needle exchange program. In baja associations, you will be able to look for an event to plan.

Answer format: ending1/ending2/ending3/ending4