X is a letter, a sound, a word, a symbol. X is the unknown. It can be sleek and edgy; it can be religious. For just a simple shape of two crossed lines, X is a lot of things. "I might say that it has ...
iDepartment of Medicine, Division of Respirology, University Health Network, Toronto, ON, Canada jInstitute of Health Policy, Management, and Evaluation at the University of Toronto, Toronto, ON, ...