Salvador / Victoria / Nanjing / Melbourne / Bangalore / Sydney / /
Company
John Billings / John J Billings Africa / Drs Evelyn / Ball USA / /
Continent
Australia / Africa / /
Country
Indonesia / Tonga / El Salvador / United States / Australia / Burkina Faso / Philippines / China / New Zealand / India / Ireland / /
Facility
Jiangsu Family Planning Research Institute / St John’s College Hospital / Nanjing Family Planning Instruction Institute / /
MedicalTreatment
Natural Family Planning / Contraception / Periodic Abstinence / fertility control / /
Organization
World Health Organization / Indian Council / States/Indian Council / Nanjing Family Planning Instruction Institute / Ireland/World Health Organisation Australia / Jiangsu Family Planning Research Institute / /
Person
Evelyn L Billings / Xue Man / Ann Westmore / Klaus H. Klaus / Shao Zhen / Hui Ling / Evelyn Billings / /
Position
Investigator / Minister / Minister of Health / Trials Location/Investigator / /
TRIALS of THE BILLINGS OVULATION METHOD Introduction Trials of the Billings Ovulation Method carried out in both developed and developing countries reveal high