When security guard Pichaymuthu Saloman got home from his night shift on Christmas Day, he sat at the edge of his wife's bed and wished her "Merry Christmas" before gingerly lifting her onto a wheelchair. The 66-year-old wheeled Madam Saroja Rosalind into the bathroom, where he gently washed her. Showering his 61-year-old wife is a delicate, 10-minute process but it...