function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ewing, Henry Ellsworth', 2],
    ['Hajiqanbar, Hamidreza & Mortazavi, Abdolazim', 3],
    ['Husband, Robert W.', 12],
    ['Husband, Robert W. & Zhang, Zhi-Qiang', 2],
    ['LIU, DONG & YI, TIAN-CI & XU, YUN & ZHANG, ZHI-QIANG', 8],
    ['Lindquist, Evert E. & Sidorchuk, Ekaterina A.', 1],
    ['Majidi, Maryam & Hajiqanbar, Hamidreza & Saboori, Alireza', 2],
    ['Seeman, Owen D.', 22]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=52)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);