http://www.phillytrib.com/news/personal-injury-law-firms-can-now-direct-ads-at-er/article_81f132ee-278a-5384-a707-85805a99184b.html

Personal injury lawyers have long chased ambulances. But now, they’re waiting for ambulances to come to them, staking out emergency rooms in pursuit of clients.

Patients sitting in emergency rooms, chiropractors, and pain clinics in the Philadelphia area may start noticing the kind of messages typically seen along highway billboards and public transit on their phones: personal injury law firms looking for business by casting mobile ads at patients.