function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Handal, Adil Y. & Torstensson, Anders & Wulff, Angela', 2],
    ['Joh, Gyeongje', 3],
    ['Jovanovska, Elena & Buczkó, Krisztina', 3],
    ['Jovanovska, Elena & Wilson, Mallory C. & Hamilton, Paul B.', 25],
    ['Sun, Geng & Levkov, Zlatko & Xiao, Weiyang & Moraj, Nikola', 1],
    ['Wu, Weiwei & Sun, Lin & Li, Xuesong & Liang, Junrong', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    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);