Patient Smartphone Ownership and Interest in Mobile Apps to Monitor Symptoms of Mental Health Conditions: A Survey in Four Geographically Distinct Psychiatric Clinics oleh Torous, John, Chan, Steven Richard, Yee-Marie Tan, Shih, Behrens, Jacob, Mathew, Ian, Conrad, Erich J, Hinton, Ladson, Yellowlees, Peter, Keshavan, Matcheri