function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 2],
    ['Hermann, Johann', 1],
    ['Linnaeus, Carolus', 3],
    ['Menzies, A.', 1],
    ['Modeer, Adolph', 1],
    ['Montagu, George', 1],
    ['Müller, Otto Friedrich', 2],
    ['Rudolphi, Carolo Asmundo', 7],
    ['Schrank, Franz von Paula', 1],
    ['Shakarbaev, U. A. & Akramova, F. D. & Azimov, D. A.', 1],
    ['Von Frolich, Joseph Aloysius', 2],
    ['Zvegintsova, N. S. & Kharchenko, V. A. & Kuzmina, T. A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);