“…Data on recurrence and follow-up times pertaining to 12,384 patients treated for PSD by Limberg and Dufourmentel flaps were extracted from 139 additional non-RCTs 4 , 60 , 103 , 104 , 115 , 126 – 128 , 133 , 156 , 157 , 196 , 199 , 201 , 208 , 221 , 224 , 242 , 261 , 262 , 267 , 289 , 302 , 303 , 313 , 318 , 321 , 322 , 334 – 336 , 348 , 372 , 399 , 407 , 410 , 415 , 417 , 426 , 433 , 438 , 439 , 444 – 541 . Among these patients, a recurrence of 0.4% (95% CI 0.3–0.5%) was observed in patients at 12 months, 1.6% (95% CI 1.3–1.9%) at 24 months, 5.2% (95% CI 4.5–5.8%) at 60 months, and 11.4% (95% CI 9.2–13.7%) at 120 months (Fig.…”