HEREY THEREY I CALL THY SOULS AND THEE SOULS TO COME AND CONTMEPLATE THY PICTURE WHO IS HE?? A: confident papi chulo
B: confident papi chulo
C: confident papi chulo
D: All of the above

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.