function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gore, Ramchandra & Gaikwad, Sayajirao', 4],
    ['Jarvis, Charlie', 5],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 5],
    ['Silva, Lucas & Thomaz, Luciana Dias & Dutra, Valquíria Ferreira', 3],
    ['Silva, Marcos José Da & Antunes, Lorena Lana Camelo', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);