function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Brickner, Itzchak & Koplovitz, Gil & Simon-Blecher, Noa', 1],
    ['Broch, H.', 1],
    ['Broch, Hjalmar', 2],
    ['Chan, Benny K. K. & Hayashi, Ryota', 2],
    ['Darwin, Charles Robert', 1],
    ['Foster, B. a.', 1],
    ['Foster, B. a. & Buckeridge, John S.', 1],
    ['Hiro, F.', 1],
    ['Nilsson-Cantell, C. a.', 2],
    ['Stebbing, Thomas R. R.', 1],
    ['Van Syoc, R. S. & Dekelboum, A. M.', 6],
    ['Van, Robert J. & Dekelboum, Allen M.', 10],
    ['Young, Paulo S.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);