function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['De Jong, Grant', 3],
    ['De Jong, Grant D.', 1],
    ['Kaplin, Vladimir & Martynov, Vladimir', 2],
    ['Mendes, Luís F. & Bach de Roca, C. & Gaju-Ricart, M.', 1],
    ['Packauskas, Richard J. & Shofner, Ryan M.', 1],
    ['Palacios-Martinez, Iñigo', 1],
    ['Song, Zhi-Shun & Huang, Fu-Sheng & Liang, Ai-Ping', 3],
    ['Song, Zhi-Shun & Mendes, Luis F. & Huang, Fu-Sheng', 4],
    ['Tillyard, Robin John', 1],
    ['Womersley, Herbert', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    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);