Table:
Follow-up visits	Group A (OLO)	Group B (MMC)
Subgroup (I)	Subgroup (II)	Subgroup (III)	Subgroup (IV)	Subgroup (I)	Subgroup (II)	Subgroup (III)	Subgroup (IV)	P value
1st week	12 (80%)	1 (6.7%)	2 (13.3%)	0 (0.0%)	14 (93.3%)	0 (0.0%)	1 (6.7%)	0 (0.0%)	0.399
2nd week	12 (80%)	1 (6.7%)	2 (13.3%)	0 (0.0%)	13 (86.7%)	1 (6.7%)	1 (6.7%)	0 (0.0%)	0.35
1st month	12 (80%)	1 (6.7%)	2 (13.3%)	0 (0.0%)	12 (80%)	2 (13.3%)	0 (0.0%)	1 (6.7%)	0.85
2nd month	10 (66.7%)	3 (20%)	1 (6.7%)	1 (6.7%)	8 (53.3%)	3 (20%)	1 (6.7%)	1 (6.7%)	0.523
4th month	8 (53.3%)	4 (26.7%)	2 (13.3%)	1 (6.7%)	9 (60%)	4 (26.7%)	1 (6.7%)	1 (6.7%)	0.511
6th month	9 (60%)	2 (13.3%)	3 (20%)	1 (6.7%)	5 (33.3%)	5 (33.3%)	4 (26.7%)	1 (6.7%)	0.323
9th month	8 (53.3%)	4 (26.7%)	2 (13.3%)	1 (6.7%)	5 (33.3%)	4 (26.7%)	4 (26.7%)	2 (13.3%)	0.263
12th month	8 (53.3%)	3 (20%)	2 (13.3%)	2 (13.3%)	7 (46.7%)	3 (20%)	3 (20%)	2 (13.3%)	0.471

Transcribe the diagram into Markdown format.

| <ROWSPAN=2> Follow-up visits | <COLSPAN=4> Group A (OLO) | <COLSPAN=4> Group B (MMC) | 
 | Subgroup (I) | Subgroup (II) | Subgroup (III) | Subgroup (IV) | Subgroup (I) | Subgroup (II) | Subgroup (III) | Subgroup (IV) | P value | 
 | --- | --- | --- | --- | --- | --- | --- | --- | --- | 
 | 1st week | 12 (80%) | 1 (6.7%) | 2 (13.3%) | 0 (0.0%) | 14 (93.3%) | 0 (0.0%) | 1 (6.7%) | 0 (0.0%) | 0.399 | 
 | 2nd week | 12 (80%) | 1 (6.7%) | 2 (13.3%) | 0 (0.0%) | 13 (86.7%) | 1 (6.7%) | 1 (6.7%) | 0 (0.0%) | 0.35 | 
 | 1st month | 12 (80%) | 1 (6.7%) | 2 (13.3%) | 0 (0.0%) | 12 (80%) | 2 (13.3%) | 0 (0.0%) | 1 (6.7%) | 0.85 | 
 | 2nd month | 10 (66.7%) | 3 (20%) | 1 (6.7%) | 1 (6.7%) | 8 (53.3%) | 3 (20%) | 1 (6.7%) | 1 (6.7%) | 0.523 | 
 | 4th month | 8 (53.3%) | 4 (26.7%) | 2 (13.3%) | 1 (6.7%) | 9 (60%) | 4 (26.7%) | 1 (6.7%) | 1 (6.7%) | 0.511 | 
 | 6th month | 9 (60%) | 2 (13.3%) | 3 (20%) | 1 (6.7%) | 5 (33.3%) | 5 (33.3%) | 4 (26.7%) | 1 (6.7%) | 0.323 | 
 | 9th month | 8 (53.3%) | 4 (26.7%) | 2 (13.3%) | 1 (6.7%) | 5 (33.3%) | 4 (26.7%) | 4 (26.7%) | 2 (13.3%) | 0.263 | 
 | 12th month | 8 (53.3%) | 3 (20%) | 2 (13.3%) | 2 (13.3%) | 7 (46.7%) | 3 (20%) | 3 (20%) | 2 (13.3%) | 0.471 |