 Well, I think that covers most of the things we want to say about smartphone use and human health. Turning to the last part of the presentation, let me go over the key points. In our presentation, we have discussed the point of fall and against the statement. The frequent use of smartphone is harmful to human health. My partner Robert talked about the point that supports the statement. Mobile phones may damage body structures and smartphone apps may lead to misunderstanding of health issues. I then explored the point against the statement. Smartphones help in monitoring health and smartphones promote behavioural and psychological health. Taking all the points into consideration, it appears that the positive side of using smartphones awaits the negative side. We do think that smartphones should be used in moderation. But all in all, we support the use of using smartphones and disagree with the argument that smartphones are harmful to human health. As a device, it can actually improve our health in different aspects. Okay, that's all for our presentation. Thank you for listening and I hope you found it interesting. You can find more details in our reference list. And now, we would like to open it for discussion.