health care system
...that emigration of physicians and nurses poses a major problem for Nigeria's health care system, as there were 21,000 Nigerian doctors practising in the U.S. alone?
...that <a href="./Emigration" id="mwAtc" rel="mw:WikiLink" title="Emigration">emigration</a> of physicians and nurses poses a major problem for <a href="./Nigeria" id="mwAtg" rel="mw:WikiLink" title="Nigeria">Nigeria</a>'s <b id="mwAtk"><a class="mw-redirect" href="./Health_care_in_Nigeria" id="mwAto" rel="mw:WikiLink" title="Health care in Nigeria">health care system</a></b>, as there were 21,000 Nigerian doctors practising in the <a href="./United_States" id="mwAts" rel="mw:WikiLink" title="United States">U.S.</a> alone?