[1] Univ Childrens Hosp, Res Grp Human Genet, Div Med Genet, CH-4005 Basel, Switzerland
[2] Dept Res, CH-4005 Basel, Switzerland
[3] Inst Child Hlth, Kolkata 700017, W Bengal, India
[4] Univ Basel, Calcutta Project Fdn, CH-4031 Basel, Switzerland
[5] SB Devi Char Home, Kolkata 700006, W Bengal, India
[6] Univ Clin, Dept Dermatol, CH-4031 Basel, Switzerland