Antivirals for COVID-19: five questions that must be answered

Fee-for-Service Payment – An Evil Practice that Must be Stamped Out?

Co-opting physicians to regulate Fee-for-Service (FFS) payment is more feasible and simpler to administer than capitation, Diagnosis-Related Groups (DRGs) and pay-for-performance. The key lies in designing and revising the fee schedule, which not only defines and sets the fee for each item, but also the conditions of billing. Adherence to these regulations must be strictly audited in order to c...

Agent-based modelling of pedestrian movements: the questions that need to be asked and answered

Vulnerable road users have steadily attracted increased importance in transport and planning. The behaviour of pedestrian movements (especially in the areas off but adjacent to roads) requires improved tools to address the issues now being raised. Such behaviour and interactions can now be modelled by using a combination of massively parallel processes simulating individual pedestrians, and a s...

Hair restoration: answered questions.

Dr. Dzubow's comments in "Hair Restoration: Turbo Transplants and Fractured Follicles" (Dermatol Surg 1995;21:283), regarding Dr. William Rassman's recent article "Micrografting in Extensive Quantities" (Dermatol Surg 1995;21:306-11), state that "questions remain unanswered." I have been working closely with Dr. Rassman for some time and perform extensive micrografting myself. In addition, I ha...

Curves That Must Be Retraced

We exhibit a polynomial time computable plane curve Γ that has finite length, does not intersect itself, and is smooth except at one endpoint, but has the following property. For every computable parametrization f of Γ and every positive integer n, there is some positive-length subcurve of Γ that f retraces at least n times. In contrast, every computable curve of finite length that does not int...

Unmarried Mothers: Some Questions to Be Answered and Some Answers to Be Questioned