Randomization is important in studies with pain outcomes: systematic review of transcutaneous electrical nerve stimulation in acute postoperative pain
1996 ◽
Vol 77
(6)
◽
pp. 798-803
◽
2021 ◽
2008 ◽
Vol 11
(5)
◽
pp. E300-E303
◽
1988 ◽
Vol 61
(3)
◽
pp. 308-312
◽
2002 ◽
Vol 133
(5)
◽
pp. 643-645
1980 ◽
Vol 08
(01n02)
◽
pp. 190-194
◽
2014 ◽
Vol 19
(4)
◽
pp. 234-244
◽