2013
PloS one, (2013).8 7 10.1371/journal.pone.0070063.
2013
Thorax, (2013).69 1 10.1136/thoraxjnl-2013-203931.
2013
BMC infectious diseases, (2013).13 1 10.1186/1471-2334-13-307.
2013
International journal of social research methodology, (2013).16 4 10.1080/13645579.2012.661204.
2013
The British journal of general practice, (2013).63 612 10.3399/bjgp13X669077.
2013
PloS one, (2013).8 6 10.1371/journal.pone.0068121.
2013
PloS one, (2013).8 6 10.1371/journal.pone.0065873.
2013
Emerging infectious diseases, (2013).19 6 10.3201/eid1906.121641.
2013
The Lancet infectious diseases, (2013).13 6 10.1016/S1473-3099(13)70030-6.
2013
The European respiratory journal, (2013).41 6 10.1183/09031936.00179712.
