function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jin, Mengjie & Keyzer, Roger De & Hutchinson, Paul & Pang, Hong', 3],
    ['Lingafelter, Steven W.', 1],
    ['Missori, Paolo & Ercoli, Lucia', 1],
    ['Titarenko, Andrey Y. & Zubov, Andrey S.', 9],
    ['Yanega, Douglas & Olson, David & Shute, Sharon & Komiya, Ziro', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);