Natural & Safe: The Workbook, Family Planning with Sensiplan supplements the manual Natural & Safe: The Handbook, Family Planning with Sensiplan . The Workbook is divided into four interactive sections, each containing examples and practice cycles to help those learning to use Sensiplan, a symptothermal method of family planning. Malteser Arbeitsgruppe NFP is an interdisciplinary team that operates as part of Malteser Health Promotion and Prevention. Malteser Arbeitsgruppe NFP developed and scientifically evaluated the Sensiplan natural method of family planning and has established its effectiveness through prospective clinical research conducted over a period of many years and published in peer-reviewed medical journals. Arbeitsgruppe NFP is focused on development of natural family planning (NFP) and quality assurance in NFP consulting and training. CycleForth LLC is the Des Moines, Iowa-based company that introduced Sensiplan in the United States in 2016, and now is making available the Natural & Safe companion texts. CycleForth specializes in development of cooperative and restorative health care products and services, and coordinates provision of Sensiplan and other fertility awareness-based methods through fertility educators at Reply Ob/Gyn & Fertility.