Which stage is missing from the chain of infection: infectious disease, reservoir, portal of exit, blank, portal of entry, susceptible host

What is the phone number to call for poison control (for humans) in the uk (specifically london)?

Prescription drugs account for 25% of all healthcare-related costs. true or false

Explain why you would or would not have a lasik surgery if you wore contacts or glasses.describe how public opinions related to this surgery have changed over the years.in your own words, explain this surgery as though you are explaining it to someone who has no knowledge of the procedure.