function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arunraj, Parappurakkal Thazhe', 4],
    ['Francis, Dani & Mohan, Vishnu & Venugopal, Divya K.', 2],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 2],
    ['Jarvis, Charlie', 2],
    ['Linnaeus, Carolus', 2],
    ['Nuraliev, Maxim S. & Yudina, Sophia V. & Truong, Ba Vuong', 17],
    ['Oliveira, Adriana & Bove, Claudia', 4],
    ['Ridley, Henry Nicholas', 1],
    ['Thornhill, Robert & Krings, Alexander & Lindbo, David', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    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);