function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jarvis, Charlie', 1],
    ['Jongkind, Carel C. H.', 1],
    ['Lin, Yun & Bi, Hai-Yan & Sun, Jun & Sun, Qian', 2],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 1],
    ['Nair, Maya Sukumaran & Prabhukumar, Konickal Mambetta', 3],
    ['Ordas, Jorge Anton D. & Pinarok, Neil Alejandro A.', 1],
    ['Turner, Ian M.', 1],
    ['Valeton, Theodoric', 2],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);