pill mills
... that to avoid prosecution, managers of illegal opioid prescription centers known as "pill mills" tend to run their facilities like pop-up stores?
... that to avoid prosecution, managers of illegal <a href="./Opioid" id="mwBQA" rel="mw:WikiLink" title="Opioid">opioid</a> prescription centers known as "<b id="mwBQE"><a href="./Pill_mill" id="mwBQI" rel="mw:WikiLink" title="Pill mill">pill mills</a></b>" tend to run their facilities like <a href="./Pop-up_retail" id="mwBQM" rel="mw:WikiLink" title="Pop-up retail">pop-up stores</a>?