function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bartak, Miroslav & Kubik, Stepan', 4],
    ['Barták, Miroslav & Grootaert, Patrick', 13],
    ['Barták, Miroslav & Kubík, Štěpán', 56],
    ['Barták, Miroslav & Shamshev, Igor', 25],
    ['El-Hawagry, Magdi S. & Abdel-Dayem, Mahmoud S.', 1],
    ['González, Christian R. & Elgueta, Mario & Ale-Rocha, Rosaly', 7],
    ['Grootaert, Patrick', 2],
    ['Grootaert, Patrick & Shamshev, Igor', 29],
    ['Grootaert, Patrick & Shamshev, Igor V.', 2],
    ['Kustov, Semen & Shamshev, Igor & Grootaert, Patrick', 30],
    ['Shamshev, Igor & Grootaert, Patrick', 10],
    ['Shamshev, Igor V. & Sinclair, Bradley J. & Khruleva, Olga A.', 2],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 4],
    ['Wang, Yuanyuan & Wang, Ning & Yang, Ding & Lin, Kejian', 5],
    ['Yang, Ding & Li, Weihai', 9],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=203)',
    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);