[1] VCSG Govt Inst Med Sci & Res, Dept Ophthalmol, Srinagar, Uttarakhand, India
[2] VCSG Govt Inst Med Sci & Res, Dept Transfus Med, Srinagar, Uttarakhand, India
[3] Swami Rama Himalayan Univ, Himalayan Inst Med Sci, Dept Immunohematol & Blood Transfus, Dehra Dun, Uttarakhand, India
[4] VCSG Govt Inst Med Sci & Res, Dept Microbiol, Srinagar, Uttarakhand, India