Patients of Cedars-Sinai did not want third parties to target them with advertising that may be related to their medical conditions, a would-be class action lawsuit against the Los Angeles teaching hospital says. "It added: "By way of illustration, if a patient made an appointment with a doctor for treatment of cancer, the tracking code Cedars-Sinai put on its Website conveyed that information to Meta, which in turn allowed Meta to include that patient in marketing target groups that it offered to its other advertising clients who wanted to market to cancer patients. "It added: "By way of illustration, if a patient made an appointment with a doctor for treatment of cancer, the tracking code Cedars-Sinai put on its Website conveyed that information to Meta, which in turn allowed Meta to include that patient in marketing target groups that it offered to its other advertising clients who wanted to market to cancer patients