Table 1.

Summary of Included Studies.

Study	No. of Patients	No. of Females/Males	Age Range	Country
Ejeckam and Nwabueze (1984)8	100	32/68	<20 years	Nigeria
Reddy et al (2002)10	100	21/79	1 month to 12 years	India
Citak et al (2011)6	282	124/158	6 months to 16 years	Turkey
De Corti et al (2014)7	238	91/126	3 months to 17 years	Italy
Gwili et al (2015)9	49	35/85	1 month to 18 years	Egypt
Bozlak et al (2016)5	218	75/143	13 months to 18 years	Turkey
Sarsu and Sahin (2016)11	1700	697/1003	<18 years	Turkey