OPARA, W. Ek. An Open Non - Comparative Study Of Parenteral Piroxicam In The Management Of Patients With Acute Low Back Pain. The Nigerian Journal of Pharmacy, [S. l.], v. 20, n. 1, 1989. Disponível em: https://psnnjp.org/index.php/home/article/view/376. Acesso em: 22 dec. 2024.