What have they (to fear) if they believe in Allah and the Last Day and spend (aright) of that which Allah hath bestowed upon them, when Allah is ever Aware of them (and all they do)?
Times are computed by method; your mosque's timetable governs the adhan. Every text carries its source and grade. Nothing here is a fatwa, a prediction, or a substitute for a doctor: your own scholar decides what is contested, and the tradition itself says the practice is alongside treatment, never instead of it.