Data for the case-control study were obtained from hospitalized patients in London and vicinity over a 4-year period (April 1948 - February 1952)
Packaging can provide clues, but it cannot fully confirm authenticity, legality, or safety
There are tons of online resources and tutorials for making these 'cigar box amps' or 'cigarette box amps,' often referred to as "dirty amps" because of their distinct, often distorted, sound
And in other news
Ultimately, GWLs were finalized in March 2020, including one specific to cataracts that reads, WARNING: Smoking causes cataracts, which can lead to blindness. Access AOA resources for discussing smoking with patients As primary eye care providers, doctors of optometry have an opportunity to educate their patients and direct them toward smoking cessation resources
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