function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['DeFilipps, Robert A. & Krupnick, Gary A.', 1],
    ['Jarvis, Charlie', 3],
    ['Jongkind, Carel C. H.', 21],
    ['Jongkind, Carel C. H. & Texier, Nicolas', 1],
    ['Lauterbach, Carl (Karl) Adolf Georg', 1],
    ['Liang, Dan & Yuan, Lang-Xing & Wang, Rui-Jiang', 1],
    ['Monteiro, Francisca & Costa, Esperança Da & Kissanga, Raquel', 8],
    ['Moura, Edweslley Otaviano de & de Sousa, Valdeci Fontes', 1],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 9],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);