https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1556-1 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1523-x https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1539-2 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1514-y https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1521-z https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1541-8 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1518-7 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1537-4 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1505-z https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1464-4 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1531-x https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1509-8 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1516-9 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1535-6 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1522-y https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1538-3 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1552-5 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1517-8 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1524-9 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1543-6 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1527-6 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1546-3 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1534-7 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1512-0 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1549-0 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1478-y https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1498-7 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1525-8 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1544-5 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1532-9 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1503-1 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1528-5 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1510-2 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1495-x https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1515-x https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1542-7 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1479-x https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1519-6 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1520-0 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1526-7 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1545-4 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1446-6 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1484-0 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1513-z https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1533-8 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1529-4 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1511-1 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1548-1 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1440-z https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1477-z https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1497-8 https://trialsjournal.biomedcentral.com/articles/10.1186/s13063-016-1536-5