Twain and his family spent four more years in Europe, mainly in England and Austria (October 1897 to May 1899), with longer spells in London and Vienna. Clara had wished to study the piano under Theodor Leschetizky in Vienna.[1]:192–211 However, Jean's health did not benefit from consulting with specialists in Vienna, the "City of Doctors".[55] The family moved to London in spring 1899, following a lead by Poultney Bigelow who had a good experience being treated by Dr. Jonas Henrik Kellgren, a Swedish osteopathic practitioner in Belgravia.