Pengetahuan/Pemahaman, Persepsi, dan Sikap terhadap Gangguan Pemusatan Perhatian/Hiperaktivitas (GPPH) di antara Mahasiswa Kedokteran di Fakultas Kedokteran Universitas Indonesia = Knowledge/Understanding, Perception, and Attitude towards Attention-Deficit/Hyperactivity Disorder (ADHD) among Medical Students at Faculty of Medicine University of Indonesia (Fakultas Kedokteran Universitas Indonesia, 2014)