[Retracted] Preliminary Study on the Application of Nanochitosan Film and Petrolatum Gauze in the Modified Devine Operation

Table 2

Follow-up time of each study.

Included studies	Follow-up time
Yang 2005 [10]	3 months−5 years
Qu 2006 [11]	6 months−3 years
An 2007 [12]	3 months
Su 2007 [13]	3−24 months
Deng 2008 [14]	6 months
Ding 2008 [15]	3−12 months
Cheng 2009 [16]	1 − 10 years
Liu 2009 [17]	6 months − 5 years
Zhan 2011 [18]	6 months−2 years
Feng 2016 [19]	14 months
He 2017 [20]	1−12 months
Xing 2018 [21]	6 months−2 years
Ge 2019 [22]	27.52 ± 12.50 months
Li 2019 [5]	6−12 months