function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cadena-Castañeda, Oscar J.', 2],
    ['Desutter-Grandcolas, Laure', 2],
    ['Ghahari, H. & Havaskary, M. & Tabari, M. & Ostovan, H.', 2],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 6],
    ['Kim, Tae-Woo & Puskás, Gellért', 1],
    ['Li, Xiaodong & Ma, Libin & Xu, Shengquan', 1],
    ['Ma, Libin & Xu, Shengquan & Makio, Takeda', 1],
    ['Ma, Libin & Zhang, Ya-Lin', 1],
    ['Ma, Libin & Zhang, Yalin', 5],
    ['Prasanna, Vimalanathan Arun & Anbalagan, Sankarappan', 1],
    ['Simeu-Noutchom, Alain & Kekeunou, Sevilor', 4],
    ['Skejo, Josip & Rebrina, Fran & Szövényi, Gergely', 3],
    ['Tan, Ming Kai', 13],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 7],
    ['Xian, Chunlan & Leong, Chi Man & Luo, Jiuyang & Jia, Fenglong', 2],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=57)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);