Re A (conjoined twins) indicated that Gracie was the stronger sibling who was sustaining the life of Rosie. Rosie had only survived birth due to a shared common artery that enabled her sister Gracie to oxygenate blood for both twins. If surgically separated, Gracie had a 94% survival rate, but Rosie was guaranteed to die. However, if they were left conjoined, then Gracie's health—which was already rapidly deteriorating—was predicted to fail before they were six months old. Gracie's death would inevitably result in Rosie's. At first instance, Mr Justice Johnson was left to decide the case without any direct precedents to guide him but
Kalin Twins thus appeared as the Kalin Brothers. They disappeared again as a performing act, until 1989. Then, their one-time support act, Cliff Richard, invited them to play at his Wembley Stadium 'The Event' concerts, as part of a sequence paying homage to the 1950s television pop show, "Oh Boy!" Kalin Twins The Kalin Twins (born February 16, 1934) were a pop music recording and songwriting duo, comprising twin brothers Harold Kalin and Herbert Kalin (died August 24, 2005 and July 21, 2006, respectively). The Kalin Twins, who were known affectionately as "Hal and Herbie", are best known for their 1958 hit