Cape Town Dr Howard Gluckman 39 Kloof Street Gardens Cape Town South Africa 8001 Phone = 021 4262300 Fax: = 021 4233053 Email: = hlg@iafrica.com     Potchefstroom Dr Henk Freka Medipark 15 Piet Uys Street Potchefstroom 2520 South Africa Phone = +27 18 2932444 Fax: = +27 18 2932449 Email: = molar@iafrica.com