function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Inkhavilay, Khamla & Sutcharit, Chirasak & Bantaowong, Ueangfa', 1],
    ['Jochum, Adrienne & Slapnik, Rajko & Kampschulte, Marian', 3],
    ['Pall-Gergely, Barna & Hunyadi, Andras & Jochum, Adrienne', 6],
    ['Pall-Gergely, Barna & Hunyadi, Andras & Vermeulen, Jaap J.', 57],
    ['Páll-Gergely, Barna & Jochum, Adrienne & J. Vermeulen, Jaap', 3],
    ['Tongkerd, Piyoros & Lwin, Ngwe & Pall-Gergely, Barna', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=73)',
    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);