function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cao, Shunan & Zhang, Fang & Zheng, Hongyuan & Peng, Fang', 1],
    ['De Matos-Pita, Susana S. & Ramil, Fran', 1],
    ['Gkelis, Spyros & Ourailidis, Iordanis & Panou, Manthos', 2],
    ['Komai, Tomoyuki & Liang, Jingzhen & Yang, Tingbao', 4],
    ['Komai, Tomoyuki & Reshmi, Rema & Kumar, Appukuttannair Biju', 2],
    ['Komai, Tomoyuki & Yoshida, Ryuta', 1],
    ['Korn, Olga M. & Kornienko, Elena S. & Komai, Tomoyuki', 1],
    ['Mclaughlin, Patsy A.', 1],
    ['Naderloo, Reza & Türkay, Michael', 8],
    ['Rahayu, Dwi Listyo & Osawa, Masayuki', 3],
    ['Trivedi, Jigneshkumar N. & Osawa, Masayuki', 1],
    ['Řezanka, Tomáš & Nedbalová, Linda & Barcytė, Dovilė', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);