OZAH, E.; OKONJI, N. O. I. Upper urinary tract stone characteristics and outcome of retrograde intra renal surgery with laser lithotripsy in a Nigerian tertiary hospital: A retrospective study. Nigerian Medical Journal, [S. l.], v. 65, n. 5, p. 604–620, 2024. DOI: 10.60787/nmj.v65i5.475. Disponível em: https://nigerianmedjournal.org/index.php/nmj/article/view/475. Acesso em: 22 apr. 2026.