1608352 SD-R study demands-resources 7 1608351 SD-R SD-refractory 2 1608355 SD-R SD females that were responsive to changes in photoperiod 1 1608353 SD-R SD photoperiods 1 1608354 SD-R SD responders 1 1608358 SD-R single and double excitation operators 1 1608356 SD-R solvent-dried, gamma-irradiated 1 1608357 SD-R spatial discrimination-reversal 1 1608359 SD-R stable disease-response 1 1608360 SD-R standard-dose rituximab 1