Cui, H., Liu, B., Song, Z., Fang, J., Deng, Y., Zhang, S., . . . Wang, Z. (2014). AB167. Efficacy and safety of long-term tadalafil 5 mg once daily combined with sildenafil 50 mg as needed at the early stage of treatment for patients with erectile dysfunction. AME Publishing Company.

Cui, H., B. Liu, Z. Song, J. Fang, Y. Deng, S. Zhang, H. Wang, and Z. Wang. AB167. Efficacy and Safety of Long-term Tadalafil 5 Mg Once Daily Combined With Sildenafil 50 Mg As Needed At the Early Stage of Treatment for Patients With Erectile Dysfunction. AME Publishing Company, 2014.

Cui, H., et al. AB167. Efficacy and Safety of Long-term Tadalafil 5 Mg Once Daily Combined With Sildenafil 50 Mg As Needed At the Early Stage of Treatment for Patients With Erectile Dysfunction. AME Publishing Company, 2014.