Table 2. Characteristics of 20 patients.

Subject	Sex	Race	Age (y)	Histology	TNM stage
1	Male	Indian	56	Squamous cell carcinoma	IIIB
2	Female	Chinese	47	Squamous cell carcinoma	III
3	Male	Filipino	52	Adenocarcinoma	IV
4	Male	Chinese	66	Adenocarcinoma	IV
5	Male	Malay	66	Adenocarcinoma	IV
6	Female	Malay	54	Adenocarcinoma	IV
7	Female	Chinese	70	Adenocarcinoma	IV
8	Male	Chinese	80	Adenocarcinoma	IV
9	Female	Chinese	59	Adenocarcinoma	IV
10	Male	Chinese	68	Squamous cell carcinoma	IV
11	Female	Chinese	56	Adenocarcinoma	IV
12	Male	Chinese	46	Adenocarcinoma	IV
13	Female	Chinese	74	Adenocarcinoma	IV
14	Male	Chinese	71	Adenocarcinoma	IV
15	Female	Chinese	80	Adenocarcinoma	IB
16	Female	Chinese	56	Adenocarcinoma	IV
17	Male	Chinese	64	Adenocarcinoma	IV
18	Male	Chinese	81	Adenocarcinoma	III
19	Male	Chinese	58	Squamous cell carcinoma	IIIB
20	Male	Malay	68	Adenocarcinoma	IV