function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ai, Min & Li, Li Juan & Worthy, Fiona Ruth & Yin, An Cheng', 3],
    ['Ai, Min & Zhong, Qiuyi & Scheidegger, Christoph & Wang, Lisong', 4],
    ['Aptroot, André & Souza, Maria Fernanda', 2],
    ['Jarvis, Charlie', 1],
    ['Kalb, Klaus & Giralt, Mireia', 6],
    ['R, Jeanne dos & Silva, eis & Aptroot, André & E, Marcela', 31],
    ['Sokoloff, Paul C. & Freebury, Colin E. & Hamilton, Paul B.', 2],
    ['Stepanova, Dace & Moisejevs, Rolands & Nitcis, Ma ris', 9],
    ['van den Boom, Pieter P. G. & Clerc, Philippe & Ertz, Damien', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=59)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);