Figure 1.

CONSORT flow diagram (WA = water only conditions, MU = mustard added to WA, GI = ginger added to WA).

^a2 interventions missing (WA, GI).

^b2 interventions missing (GI, MU).

^c2 interventions missing, n = 2 (MU, GI), 1 interventions missing, n = 2 (GI).