function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Arachchige, Gayashan M. & Jayakody, Sevvandi & Mooi, Rich', 6],
    ['Brunnschweiler, Rudolf O.', 2],
    ['Kašćelan, Slavica & Mandić, Sreten & Radović, Ivica', 1],
    ['Mooi, Rich & Kroh, Andreas & Srivastava, Dinesh K.', 9],
    ['Tanaka, Hayate & Wakabayashi, Kaori & Fujita, Toshihiko', 3],
    ['Tandon, K. K. & Srivastava, Dinesh K.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);