WhatsAppSkypeFacebook MessengerAll Conditions
1 (beginner)0101(0.8%)
233511(8.8%)
37111230(24.0%)
416151950(40.0%)
5 (expert)1110728(22.4%)
No answer2125(4.0%)
WhatsAppSkypeFacebook MessengerAll Conditions
1 (beginner)0101(0.8%)
233511(8.8%)
37111230(24.0%)
416151950(40.0%)
5 (expert)1110728(22.4%)
No answer2125(4.0%)
WhatsAppSkypeFacebook MessengerAll Conditions
1 (beginner)0101(0.8%)
233511(8.8%)
37111230(24.0%)
416151950(40.0%)
5 (expert)1110728(22.4%)
No answer2125(4.0%)
WhatsAppSkypeFacebook MessengerAll Conditions
1 (beginner)0101(0.8%)
233511(8.8%)
37111230(24.0%)
416151950(40.0%)
5 (expert)1110728(22.4%)
No answer2125(4.0%)
Close
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Close