The QGBC conference handouts are shared with the consent of their authors for educational personal use purposes only. Handouts not to be reproduced or utilized for any other purposes. Any reference to the handouts to adhere to full acknowledgment and reference to the handout author(s) and QGBC. QGBC accept no liability and give no guarantee for the validity, accuracy and completeness of the information provided. QGBC assume no legal liabilities for damages, material or immaterial in kind, caused by the use or non-use of provided information or the use of erroneous or incomplete information. These handouts might contain links to third-party web sites. The linked sites are not the control of QGBC and QGBC is not responsible for the contents of any of the mentioned website links or any link contained in a linked site.