Please choose the correct ending to complete the given sentence: Health: [header] How to prevent kidney cancer [title] Get an annual checkup. [step] An annual checkup is important to detect health problems, including ones that may be serious like kidney cancer. Establish yourself with a primary care physician and make sure that you get a checkup at least once per year.

Ending1: [title] Make sure your dosage is correct. [step] You should always start the following steps when you begin taking any medication. Ending2: Keep a record of the patient's health appointments and keep any information that you plan to bring to your appointments accurate. [title] Understand why your physician is concerned about kidney cancer. Ending3: Your doctor may order a digital biopsy of your kidney. The cost is small, but the results should point to healthy quality of life. Ending4: [substeps] You should also see your physician if you notice any problems that require attention. For example, if you are concerned about the health of your kidneys, then make an appointment with your physician to see what is going on.

Answer format: ending1/ending2/ending3/ending4