Recruitment and retention strategies in longitudinal clinical studies with low-income populations
2011 ◽
Vol 32
(3)
◽
pp. 353-362
◽
2015 ◽
Vol 45
◽
pp. 34-40
◽
Keyword(s):
2020 ◽
2011 ◽
Vol 51
(Supplement 1)
◽
pp. S33-S45
◽
Keyword(s):
2014 ◽
Vol 17
(2)
◽
pp. 133-144
◽