Please choose the correct ending to complete the given sentence: Health: [header] How to choose a periodontist [title] Ask your family dentist for a referral. [step] If you've been instructed to see a periodontist by your dentist, they will usually provide you with a referral. Dental professionals often work hand in hand, enabling you to receive comprehensive care.

Ending1: [substeps] Don't take your family doctor's opinion. Their opinion is off-putting and their advice is only honest. Ending2: [substeps] If you've been instructed to see a periodontist by a full-fledged psychiatrist or therapist, this might not be the best idea. They should be able to recommend the right one for you. Ending3: [substeps] Talk to your dental insurance company or call your local dental association to see if an appropriate referral is available. If none are available, talk to a dentist in your area directly about finding a different dentist. Ending4: Speak to your dentist about periodontists that they work with and/or recommend. [title] Ask your friends and family for referrals.

Answer format: ending1/ending2/ending3/ending4