[1] KPC Med Coll & Hosp, Dept Dermatol, Kolkata, West Bengal, India
[2] RG Kar Med Coll & Hosp, Dept Dermatol Venereol & Leprosy, Kolkata, West Bengal, India
[3] Madhubani Med Coll & Hosp, Dept Dermatol, Madhubani, Bihar, India
[4] Med Coll & Hosp Kolkata, Dept Dermatol, Kolkata, West Bengal, India