The aim of this study is evaluate the effects of telephone teleconsultations to primary care physicians (compared to the state's referral protocol) in the referrals waiting list for endocrinological appointments.

Rio Grande do Sul state's referral list for endocrinology evaluation in specialized care is highly overloaded. There is currently a referral protocol to select patients how should be referred. It will be evaluated if a intervention of telephone-based teleconsultations provided by the TelessaúdeRS to the primary care physicians can provide additional benefits. TelessaúdeRS is a telehealth program from the University of Rio Grande do Sul. This will be evaluated in a cluster randomized clinical trial.

Inclusion Criteria:

• Patients from counties with at least 5 endocrinology referrals waiting appointment.
• Patients referred from primary care physicians
• Patients referred because one of the protocol conditions (Diabetes Mellitus, Hypothyroidism, Hyperthyroidism, Goiter, Thyroid nodule, Obesity).

Exclusion Criteria:

• Patients from counties with more than one hundred endocrinology referrals waiting appointment.

We plan to publish trial results in an indexed medical journal. The results will be reported by the authors and the authorship criteria from ICMJE will be followed. After publishing the main results of the trial the unidentified dataset will be available by contacting the authors and providing an analyses plan which will be evaluated by the study's main investigator.