Fig. 6

a, data represent mean D3 (closed triangles) and D2 (closed squares) levels in the 4-weekly (interrupted lines) and 2-weekly (solid lines) groups. b, data represent mean D3 (open triangles) and D2 (open squares) levels in females (interrupted line) and males (solid lines) in the 2-weekly and 4-weekly groups. C, data represent mean 25(OH)D3 (closed triangles) and 25(OH)D2 (closed squares) levels in the 4-weekly (interrupted lines) and 2-weekly (solid lines) groups after subtracting day zero levels. D, data represent mean 25(OH)D3 (open triangles) and 25(OH)D2 (open squares) levels in females (interrupted lines) and males (solid lines) in the 2-weekly and 4-weekly groups after subtracting day zero levels