BRANCO, Rui et al.
 Treatment of persistent perineal sinus after abdominoperineal resection with gracilis muscle flap.
<strong>Revista Portuguesa de Cirurgia</strong>, [S.l.], n. 28, p. 33-39, mar. 2014.
ISSN 2183-1165.
Available at: &lt;<a href="https://revista.spcir.com/index.php/spcir/article/view/358" target="_new">https://revista.spcir.com/index.php/spcir/article/view/358</a>&gt;. Date accessed: 23 sep. 2023.